There are many structures, like muscles and bones that can be found in the upper arm region. On the full length video, we will explore them on cross section images at different levels. Watch it here:
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In a colloquial sense, the term ‘arm’ refers to the whole upper limb. In an anatomical sense, it refers to the upper arm only i.e. above the elbow. The brachial artery, a direct continuation of the axillary, supplies the region. It becomes the brachial at the lower border of teres major.
The elbow joint refers to articulation of the humerus and the two forearm bones. The ulna articulates with the medial condyle of the humerus known as the trochlear. The ulna has the pronounced olecranon process on its posterior surface, which fits into the olecranon fossa of the humerus posteriorly to limit extension. The triceps is the three-headed muscle that extends the elbow.
On the full version of this video, we will covering the following structures that can be seen on different cross sections of the upper arm:
- bones and bony landmarks: humerus, head of the humerus, lesser and greater tubercles; medial supracondylar ridge, anterior border and lateral supracondylar ridge of the humerus; medial and lateral epicondyles, olecranon fossa, capitulum and trochlea;
- muscles: coracobrachialis muscle, biceps brachii, brachialis muscles, triceps bachii, anconeus muscle;
- arteries, veins and nerves: brachial artery, brachial veins, basilic vein, cephalic vein, radial nerve, median nerve, ulnar nerve and musculocutaneous nerve.
To master this topic, click on the link and carry on watching the full video (available to Premium members): https://khub.me/6oivt
Want to test your knowledge on the structures found on a cross section at the level of the biceps brachii? Take this quiz: https://khub.me/y2kh8
Read more on the structures found on the regions of the upper limb on this article: https://khub.me/bb64u
For more engaging video tutorials, interactive quizzes, articles and an atlas of Human anatomy and histology, go to https://khub.me/eqkkw
Cross sections of the upper extremity - upper arm (preview) - Human Anatomy | Kenhub | |
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| Education | Upload TimePublished on 28 Jun 2018 |
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