Question

Answer these questions please

Answer 1

Answer:

The labels are in the attached image.

Explanation:

In a flexed arm, the biceps brachii contract and the attached tendon pulls radius and ulna upwards. During flexion, the triceps brachii relax.

Upper Arm Muscles and Tendons:

• The biceps brachii, a two headed muscle, joins the upper arm bone, humerus through a tendon.
• Most of the muscle mass of biceps brachii is located anterior to the humerus.
• The triceps, a three headed muscle, possesses three attachments:

1. The long head originates from the scapula.
2. The lateral head from the proximal region of the humerus
3. The medial head from the distal region of the humerus.

• All three converge into one tendon which attaches to the ulna.