Questions and Answers
What is the function of the biceps brachii?
Flexes forearm, flexes arm, supinates forearm.
Where is the brachialis located?
Deep to biceps brachii; anterior to humerus.
What are the functions of the triceps brachii?
Extends forearm, extends arm.
What is the function of the brachioradialis?
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Where is the pronator teres located?
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What does the flexor carpi radialis do?
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What is the function of the palmaris longus?
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What is the most medial muscle of the posterior forearm?
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What are the functions of the flexor digitorum superficialis?
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What does the extensor carpi ulnaris do?
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What is the function of the extensor digitorum minimi?
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What is the function of the extensor digitorum?
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What do the extensor carpi radialis brevis and longus share in function?
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Study Notes
Biceps Brachii
- Large muscle with two heads.
- Functions include flexion of the forearm and arm, as well as supination of the forearm.
Brachialis
- Positioned deep to the biceps brachii and anterior to the humerus.
- Primary function is to flex the forearm.
Triceps Brachii
- Large muscle consisting of three heads: long head (superficial, medial), medial head (deep, medial), and lateral head (lateral).
- Responsible for extending the forearm and the arm.
Brachioradialis
- Large, superficial muscle located laterally in the forearm.
- Functions to flex the forearm, as well as to pronate and supinate the forearm.
Pronator Teres
- Located laterally to the brachioradialis.
- Primarily pronates the forearm and weakly flexes it.
Flexor Carpi Radialis
- Situated medially and inferiorly to the pronator teres and medial to the brachioradialis.
- Functions include flexion and abduction of the hand.
Palmaris Longus
- Located medially to the flexor carpi radialis.
- Weakly flexes the wrist.
Flexor Carpi Ulnaris
- Most medial muscle located in the posterior forearm.
- Functions to flex and adduct the hand.
Flexor Digitorum Superficialis
- Positioned deep to the tendons of flexors and the palmaris longus.
- Responsible for flexing the hand and the proximal and middle phalanges of each finger.
Extensor Carpi Ulnaris
- Located lateral to the flexor carpi ulnaris.
- Functions to adduct and extend the hand.
Extensor Digitorum Minimi
- Positioned lateral to the extensor carpi ulnaris.
- Functions to extend the hand and the proximal phalanx of the fifth digit (little finger).
Extensor Digitorum
- Located lateral to the extensor digitorum minimi.
- Responsible for extending the hand and the proximal, middle, and distal phalanges of the fingers.
Extensor Carpi Radialis Brevis
- Positioned laterally to the extensor digitorum.
- Functions to extend and abduct the hand.
Extensor Carpi Radialis Longus
- Located lateral to the extensor carpi radialis brevis.
- Responsible for extending and abducting the hand.
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Description
Test your knowledge on the anatomy of the arm and forearm with these flashcards. Learn about key muscles including the biceps brachii, brachialis, and triceps brachii, their functions, and locations. Perfect for anatomy students and anyone interested in human physiology.
