Shoulder and Arm, Muscle Group #4 ~ Biceps Brachii, Triceps Brachii, and Coracobrachialis

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The thin sheet of fascia extending from the distal biceps brachii tendon is called the _______.

bicipital aponeurosis

As you follow the biceps brachii belly proximally, it becomes deep to which muscle?

deltoid (anterior fibers)

Can you name an everyday action in which the biceps brachii's ability to supinate the forearm would come in handy?

ex: turning a doorknob, tightening your gasoline cap, digging in sand

Passive pronation of the forearm would ______ the biceps brachii.

lenghten

Passive extension of the shoulder would _______ the biceps brachii.

lengthen

To locate the belly of the coracobrachialis, from which muscle would you slide off and into the axilla?

pectoralis major

The long head of the triceps brachii weaves between which two muscles before attaching at the infraglenoid tuberlce?

teres major and minor

What action could you ask your partner to perform to feel the contraction of the long head of the triceps brachii?

extend his elbow (against your resistance)

How can you position the shoulder to bring the belly of the coracobrachialis to a superficial position?

laterally rotate and abduct the shoulder to 45 degrees

Passive abduction of the shoulder would _______ the coracobrachialis.

lenghten

Passive flexion of the shoulder would _______ the triceps brachii.

lengthen

Which head of the biceps brachii passes through the intertubercular groove?

long head

To outline the distal tendon of the triceps brachii, which bony landmark do you want to locate?

olecranon process

In anatomical position, the coracobracialis is deep to which two muscles?

pectoralis major and anterior deltoid


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