The latissimus dorsi extends, adducts, and medially rotates the humerus.
Which of the following muscles adducts the arm?
Chapter 15 Muscles
|pectoralis major||adducts, flexes, rotates arm inward|
|masseter||closes jaw for chewing|
|biceps brachii||flexes forearm|
What extends and adducts the arm?
Attachments: The latissimus dorsi originates from the lower spine and ribs and the upper pelvis and fascia of the deep trunk muscles. The muscle converges into a tendon attaching to the humerus. Actions: Extends, adducts, and medially rotates the upper arm.
What muscles are used to extend arm?
An extension is when you move your arms and stick them out behind you. The muscles involved in the flexion movement include the anterior deltoid, pectoralis major and coracobrachialis. For a shoulder extension, your body uses the latissimus dorsi, teres major and minor and posterior deltoid muscles.
What two muscles of the arms perform bending or extending actions?
Flexion: decreasing the angle between two bones (bending). Extension: increasing the angle between two bones (straightening a bend). The triceps brachii and anconeus are muscles that extend the elbow. The biceps brachii, brachialis, and brachioradialis flex the elbow.
Which of the following muscles does not move the upper arm?
Axial and Appendicular Muscle
|Which of the following muscles does not move the upper arm?||Trapezius|
|The action of the brachialis muscle is to _____ the forearm.||Flex|
|In pushing (pressing) a weight from shoulder height to above the head, which of the following muscles is least utilized?||Biceps brachii|