Introduction Flashcards
What are the two main muscle groups in the forearm?
Anterior and posterior muscle groups.
True or False: The anterior compartment of the forearm primarily contains extensor muscles.
False.
What is the primary function of the muscles in the anterior compartment of the forearm?
Flexion of the wrist and fingers.
List the layers of muscles in the anterior compartment of the forearm.
Superficial layer, intermediate layer, and deep layer.
Which muscle is located in the superficial layer of the anterior compartment?
Flexor carpi radialis.
Fill in the blank: The _______ nerve innervates most of the muscles in the anterior compartment of the forearm.
Median.
What is the main function of the posterior compartment muscles of the forearm?
Extension of the wrist and fingers.
Which muscle is found in the deep layer of the anterior compartment?
Flexor pollicis longus.
True or False: The posterior compartment of the forearm contains flexor muscles.
False.
Name one muscle from the superficial layer of the posterior compartment.
Extensor carpi radialis longus.
What nerve primarily innervates the muscles of the posterior compartment?
Radial nerve.
What is the role of the brachioradialis muscle?
It assists in flexing the elbow.
Identify one muscle in the intermediate layer of the anterior compartment.
Flexor digitorum superficialis.
Fill in the blank: The _______ is a muscle that extends the index finger.
Extensor indicis.
What is the primary action of the flexor carpi ulnaris?
Flexion and adduction of the wrist.
List the three layers of muscles in the posterior compartment.
Superficial layer, deep layer, and outcropping muscles.
True or False: The supinator muscle is located in the anterior compartment.
False.
What is the main function of the extensor carpi ulnaris?
Extension and adduction of the wrist.
Which muscle is responsible for extending the thumb?
Extensor pollicis longus.
Fill in the blank: The _______ compartment contains muscles that mainly perform wrist flexion.
Anterior.
True or False: The flexor digitorum profundus is located in the deep layer of the anterior compartment.
True.
What is the primary action of the extensor digitorum?
Extension of the fingers.
Name a muscle that is involved in both flexion and pronation of the forearm.
Pronator teres.
What is the main function of the anconeus muscle?
Assists in elbow extension.
Which muscle is involved in the extension of the little finger?
Extensor digiti minimi.
Fill in the blank: The _______ compartment is primarily responsible for finger flexion.
Anterior.
