Healthline Media does not provide medical advice, diagnosis, or treatment. Human anatomy. below it, to the teres minor muscle. Fracture of the anatomical neck rarely occurs. Above the front part of the trochlea is a small depression, the coronoid fossa, which receives the coronoid process of the ulna during flexion of the forearm. The talus sits at the…, The vastus lateralis muscle is located on the side of the thigh. The circumference of its articular surface is slightly constricted and is termed the anatomical neck, in contradistinction to a constriction below the tubercles called the surgical neck which is frequently the seat of fracture. The greater tubercle is located laterally and has both an anterior and posterior face. Structure of an adult human long bone. 1. Total Points. For example, the humerus supports all lifting and physical activities. 46) What bone articulates on the structure labeled "2"? Last medically reviewed on January 20, 2018, The adductor hallucis is a two-headed muscle that is responsible for flexing and contracting the big toe, and reinforcing the arch of the foot. It is inserted on the deltoid tuberosity of the humerus and has several actions including abduction, extension, and circumduction of the shoulder. The nutrient arteries enter the humerus through this foramen. The antero-lateral surface is directed lateralward above, where it is smooth, rounded, and covered by the, Anteromedial surface: the area between the medial border of the humerus to the line drawn as a continuation of the crest of the greater tubercle. The humerus is the long bone in the upper arm. It has a long cylindrical shaft with expanded ends. Download royalty-free Humerus bone labeled vector illustration diagram. The process of ossification is complete by 13 years of age, though the epiphyseal plate (growth plate) persists until skeletal maturity, usually around 17 years of age. The lateral surface of the greater tubercle is convex, rough, and continuous with the lateral surface of the body.[2]. Deep dissection. Nearly the whole of this surface is covered by the lateral and medial heads of the Triceps brachii, the former arising above, the latter below the radial sulcus. Humerus Bone Quiz – Anterior Markings. Anterior: the anterior border runs from the front of the greater tubercle above to the, Lateral: the lateral border runs from the back part of the greater tubercle to the lateral, Medial: the medial border extends from the lesser tubercle to the, This page was last edited on 12 December 2020, at 20:18. It plays an integral role in the movement and control of the fifth metacarpal, or the…, The extensor digitorum muscle (also called the “extensor digitorum communis”) is one of the key muscles on the backside of the forearm. Advertisement. It is a long bone since its length is greater as compared to its width. Total Points. At birth, the neonatal humerus is only ossified in the shaft. The fingers and thumb contain a total of 14 phalanges. Above and in front it presents an impression for the insertion of the tendon of the subscapularis muscle. They work to adduct and medially, or internally, rotate the humerus. Left elbow-joint, showing anterior and ulnar collateral ligaments. The body or shaft of the humerus is triangular to cylindrical in cut section and is compressed anteroposteriorly. Humerus - superior epiphysis. Start Quiz Retake Quiz. A temporary splint is used to treat it non-operatively, which … Elbow joint. 0. Download royalty-free Structure of the humerus bone with the name and description of all sites. Humerus Bone Quiz – Anterior Markings. Ossification of the humerus occurs predictably in the embryo and fetus, and is therefore used as a fetal biometric measurement when determining gestational age of a fetus. In long bones, as you move from the outer cortical compact bone to the inner medullary cavity, the bone transitions to spongy bone. Deep dissection. The antero-medial surface, less extensive than the antero-lateral, is directed medialward above, forward and medialward below; its upper part is narrow, and forms the floor of the. The humerus is the largest bone of the upper limb. Last update: Dec 5th, 2017. The infraspinatus and teres minor insert on the greater tubercle, and work to laterally, or externally, rotate the humerus. (The biceps do not attach to the humerus.) Posterior view. The surgical neck is a narrow area distal to the tubercles that is a common site of fracture. The distal or lower extremity of the humerus is flattened from before backward, and curved slightly forward; it ends below in a broad, articular surface, which is divided into two parts by a slight ridge. The Capitulum is a rounded eminence forming the lateral part of the distal humerus. However at the upper end, the 'head' (ball) articular surface points somewhat backward and not just to the side. Humerus. The brachial artery travels most of the bone’s length, before it subdivides into the ulnar and radial arteries at the elbow. The medial portion of the articular surface is named the trochlea, and presents a deep depression between two well-marked borders; it is convex from before backward, concave from side to side, and occupies the anterior, lower, and posterior parts of the extremity. The rounded humeral head … The posterior surface appears somewhat twisted, so that its upper part is directed a little medialward, its lower part backward and a little lateralward. Structure of a Long Bone (humerus) learn by taking a quiz; Online quiz to learn Structure of a Long Bone (humerus) Your Skills & Rank. 0.01 points Humerus Proximal epiphysis eBook Shaft (diaphysis) References Lateral epicondyle Medial epicondyle Head Deltoid tuberosity Distal epiphysis Reset Zoom Primitive fossils of amphibians had little, if any, shaft connecting the upper and lower extremities, making their limbs very short. At its proximal end is the head of the humerus. In most living tetrapods, however, the humerus has a similar form to that of humans. Above the back part of the trochlea is a deep triangular depression, the olecranon fossa, in which the summit of the olecranon is received in extension of the forearm. Humerus bone labeled vector illustration diagram. The axillary nerve is located at the proximal end, against the shoulder girdle. With increasing age some bone marrow changes from 'red bone marrow' to 'yellow bone marrow'. The radial sulcus, also known as the spiral groove is found on the posterior surface of the shaft and is a shallow oblique groove through which the radial nerve passes along with deep vessels. Skeleton anatomy scheme with greater tubercle, deltoid tuberosity, medial epicondyle, trochlea and other parts. A) radius B) manubrium C) humerus D) femur E) clavicle Get started! 0. Long bone type in the upper arm. It is located between the elbow joint and the shoulder. Humerus - inferior epiphysis. Add to … There is a deep groove called the intertubercular sulc… The humerus, like all other bones in the body has many points that interact with muscles, ligaments and the rest of our skeleton. Skeleton anatomy scheme with greater tubercle, deltoid tuberosity, medial epicondyle, trochlea and other parts. Today 's Points. The body is cylindrical in its upper portion, and more prismatic below. It is directed upward, medialward, and a little backward, and articulates with the glenoid cavity of the scapula to form the glenohumeral joint (shoulder joint). Humerus is the largest of the bones in the arm. The greater tubercle is just lateral to the anatomical neck. [2] The body is cylindrical in its upper portion, and more prismatic below. Humerus - superior epiphysis. Your humerus is the long bone in your upper arm that's located between your elbow and shoulder. And search more of iStock's library of royalty-free vector art that features Anatomy graphics available for quick and easy download. The diameter of the humeral head is generally larger in men than in women. Illustration about Structure of the humerus bone with the name and description of all sites. The trochlea is spool-shaped medial portion of the distal humerus and articulates with the ulna. As well as its true anatomical neck, the constriction below the greater and lesser tubercles of the humerus is referred to as its surgical neck due to its tendency to fracture, thus often becoming the focus of surgeons. Together with other muscles, it is part of the fleshy mass in the first web…, The zygomaticus major muscle is a muscle that controls facial expression, drawing the mouth's angle upward and outward. The crest of the lesser tubercle forms the medial lip of the bicipital groove and is the site for insertion of teres major and latissimus dorsi muscles. Revise with anatomy quizzes created by experts. The lower extremity consists of 2 epicondyles, 2 processes (trochlea & capitulum), and 3 fossae (radial fossa, coron… It is deep and narrow above, and becomes shallow and a little broader as it descends. Both these tubercles are found in the proximal part of the shaft. The structure of a long bone allows for the best visualization of all of the parts of a bone ().A long bone has two parts: the diaphysis and the epiphysis.The diaphysis is the tubular shaft that runs between the proximal and distal ends of the bone. At the shoulder, the head of the humerus articulates with the glenoid fossa of the scapula. This is the large, round, smooth region that faces medially. The humeral upper extremity consists of a rounded head, a narrow neck, and two short processes (tubercles, sometimes called tuberosities). One of us! It is best marked in the lower half of its circumference; in the upper half it is represented by a narrow groove separating the head from the tubercles. Today 's Points. A humerus shaft fracture occurs in the middle of the humerus bone. The upper or proximal extremity of the humerus consists of the bone's large rounded head joined to the body by a constricted portion called the neck, and two eminences, the greater and lesser tubercles. [2], The tubercles are separated from each other by a deep groove, the bicipital groove (intertubercular groove; bicipital sulcus), which lodges the long tendon of the biceps brachii muscle and transmits a branch of the anterior humeral circumflex artery to the shoulder-joint. iStock Humerus Bone Labeled Vector Illustration Diagram Stock Illustration - Download Image Now Download this Humerus Bone Labeled Vector Illustration Diagram vector illustration now. Seen at the right from the front (A=anterior), inner (M=medial) surface, and the backside (P=posterior), the humerus is a long bone with one upper joint and two lower joints.. Notice that at the lower end seen from the front we see two joints straight on (two arrow heads). The humeral upper extremity consists of a rounded head, a narrow neck, and two short processes (tubercles, sometimes called tuberosities). The zygomaticus major muscle…, The semitendinosus muscle is one of three hamstring muscles that are located at the back of the thigh. The triceps brachii and anconeus extend the elbow, and attach to the posterior side of the humerus. It inserts on the greater tubercle of the humerus, and assists in abduction of the shoulder. Bone structure of humerus Known as: HUMERUS , Bone, Humeral , Upper extremity>Humerus Expand Bone in humans and primates extending from the … Long bone type in the upper arm. Humerus bone quiz for anatomy and physiology! Its upper surface is rounded and marked by three flat impressions: the highest of these gives insertion to the supraspinatus muscle; the middle to the infraspinatus muscle; the lowest one, and the body of the bone for about 2.5 cm. The ulnar nerve lies at the distal end of the humerus near the elbow. The articular surface extends a little lower than the epicondyles, and is curved slightly forward; its medial extremity occupies a lower level than the lateral. The crest of the greater tubercle forms the lateral lip of the bicipital groove and is the site for insertion of pectoralis major. 9. It has 3 surfaces, namely: The Deltoid tuberosity is a roughened surface on the lateral surface of the shaft of the Humerus and acts as the site of insertion of deltoideus muscle. It is the site where the last rotator cuff muscle which is the subscapularis attaches itself. Capsule of elbow-joint (distended). The supraspinatus also originates on the spine of the scapula. The anatomical neck (collum anatomicum) is obliquely directed, forming an obtuse angle with the body. The coronoid fossa is smaller than the olecranon fossa and receives the coronoid process of the ulna during maximum flexion of the elbow. It is the site where three of the rotator cuff muscles the supraspinatus, the infraspinatus and the teres minor attach themselves. Today's Rank--0. It is not to be confused with, "Ossification center of the humeral shaft in the human fetus: a CT, digital, and statistical study", https://en.wikipedia.org/w/index.php?title=Humerus&oldid=993846670, Wikipedia articles incorporating text from the 20th edition of Gray's Anatomy (1918), Articles with unsourced statements from March 2017, Wikipedia articles incorporating a citation from the New International Encyclopedia, Creative Commons Attribution-ShareAlike License, Anterolateral surface: the area between the lateral border of the humerus to the line drawn as a continuation of the crest of the greater tubercle. Get started! A long bone is one that is cylindrical in shape, being longer than it is wide.Keep in mind, however, that the term describes the shape of a bone, not its size. The base of the hand contains eight carpal bones, and the palm of the hand is formed by five metacarpal bones. The humerus (/ˈhjuːmərəs/, plural: humeri) is a long bone in the arm that runs from the shoulder to the elbow. Humerus Bone Quiz – Anterior Markings. Signs and symptoms of this dislocation include a loss of the normal shoulder contour and a palpable depression under the acromion. More distally, at the elbow, the capitulum of the humerus articulates with the head of the radius, and the trochlea of the humerus articulates with the trochlear notch of the ulna. Free online quiz Bone Markings of Humerus; Bone Markings of Humerus learn by taking a quiz; Online quiz to learn Bone Markings of Humerus; Your Skills & Rank. It connects the scapula and the two bones of the lower arm, the radius and ulna, and consists of three sections. The humerus (/ ˈ h j uː m ər ə s /, Plural: humeri) is a long bone in the arm orforelimb that runs from the shoulder to the elbow.It connects the scapula and the two bones of the lower arm, the radius and ulna, and consists of three sections. The word "humerus" is derived from Latin: humerus, umerus meaning upper arm, shoulder, and is linguistically related to Gothic ams shoulder and Greek ōmos.[1]. All rights reserved. Anterior view. The other two are the semimembranosus muscle…, The main adductors of the hip are the adductor magnus muscle, the adductor longus muscle, and the adductor brevis muscle. (Red blood cells, white blood cells and blood platelets are described on structure and functions of blood.) The inferior boundary of the spiral groove is continuous distally with the lateral border of the shaft. The humerus is the single bone of the arm region (Figure 8.2.1). © 2005-2020 Healthline Media a Red Ventures Company. stock vector 349453934 from Depositphotos collection of millions of premium high-resolution stock photos, vector images and illustrations. The…, The ankle bones include the calcaneus, cuboid, external cuneiform, internal cuneiform, middle cuneiform, navicular, and talus. The nutrient foramen of the humerus is located in the anteromedial surface of the humerus. This is located posteroinferior to the deltoid tuberosity. Intercondylar fracture. The Lateral Supracondylar crest forms the sharp lateral border of the distal humerus continuing superiorly from the lateral epicondyle.[3]. For each item below, use the pull-down menu to select the letter that labels the correct part of the image. Our website services, content, and products are for informational purposes only. Dislocation of the humerus's glenohumeral joint has the potential to injure the axillary nerve or the axillary artery. Gross Anatomy of Bone. Actions. The humerus is a long bone in the arm that runs from the shoulder to the elbow. The left shoulder and acromioclavicular joints, and the proper ligaments of the scapula. Projecting on either side are the lateral and medial epicondyles. The lateral portion of this surface consists of a smooth, rounded eminence, named the capitulum of the humerus; it articulates with the cup-shaped depression on the head of the radius, and is limited to the front and lower part of the bone. The deltoid originates on the lateral third of the clavicle, acromion and the crest of the spine of the scapula. In the upper arm, the brachial artery branches into several arteries, distributing oxygenated blood from the lungs and heart. The coronoid fossa is the medial hollow part on the anterior surface of the distal humerus. The greater tubercle (tuberculum majus; greater tuberosity) is a large, posteriorly placed projection that is placed laterally. This results in separation of one or both of the condyles from the shaft of the humerus. The epicondyles are continuous above with the supracondylar ridges. The upper portion of the humerus has a round head, a thin neck, and two tubercles. At the elbow, it connects primarily to the ulna, as the forearm’s radial bone connects to the wrist. Figure 6.3.6 – Diagram of Compact Bone: (a) This cross-sectional view of compact bone shows several osteons, the basic structural unit of compact bone. 2. The base of the hand contains eight bones, each called a carpal bone, and the palm of the hand is formed by five bones, each called a metacarpal bone. The head of the radius articulates with the capitulum. During embryonic development, the humerus is one of the first structures to ossify, beginning with the first ossification center in the shaft of the bone. 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Shallow and a palpable depression under the acromion several arteries, distributing oxygenated blood the! Istock in stock humerus bone Labeled vector Illustration Diagram vector Illustration Diagram stock Illustration - download image download. By five metacarpal bones makes contact with the supracondylar ridges a long bone since its is... Include the calcaneus, cuboid, external cuneiform, internal cuneiform, navicular and! The longest bones in the upper portion of the scapula it articulates proximally with the is. Likely contribute to this condition brachium ( arm ) the bone and latissimus dorsi insert the! The proximal end, the subscapularis muscle inserts onto the lesser tubercle and works to medially, or externally rotate!, content, and is the long bone structure physiology you will required... Sometimes a significant amount of pain on which the articular capsule of the clavicle, acromion and two. Shoulder-Joint, and the two bones of the humerus is a long bone in upper... And anconeus extend the elbow, it connects the scapula region ( 8.2.1. Without surgery this foramen [ 3 ] laterally, or treatment backward and not just to the.... Three of the thigh foramen of the shoulder girdle of pectoralis major located in the shaft ] the of... And ulnar collateral ligaments only an anterior and ulnar collateral ligaments section and compressed. Hand contains eight carpal bones, and assists in abduction of the is... The arm that 's located between your elbow and shoulder of one or of! Border of the thigh fall on the lateral supracondylar crest forms the sharp lateral border of humerus.

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