Functions of Spinal Cord and Spinal Nerve Quiz

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Which part of the body does C1 not innervate according to the text?

Neck (correct)

Scalp

Face

Torso

How many pairs of spinal nerves are there in total?

26

22

31 (correct)

28

What is the main function of dermatomes?

To regulate body temperature

To protect the spinal cord

To provide sensory innervation to a specific segment of skin (correct)

To innervate muscles

Which part of the spinal nerve is considered a mixed nerve?

Anterior rami Signup and view all the answers

Where does the spinal cord end inferiorly?

L1 vertebra Signup and view all the answers

What structure houses both the spinal cord and the cauda equina?

Vertebral canal Signup and view all the answers

Which part of the spinal cord can function independently from the brain?

'Gray matter' Signup and view all the answers

'Superior end' of the spinal cord is continuous with which part of the brain according to the text?

'Brainstem' Signup and view all the answers

'CSF cerebrospinal fluid' serves what purpose in relation to the spinal cord?

'Buoys and protects' Signup and view all the answers

'Spinal nerves exit the vertebral column through' which anatomical structure?

'Intervertebral foramen' Signup and view all the answers

Which nerve innervates the deltoid muscle and teres minor?

Axillary nerve Signup and view all the answers

Damage to which muscle can cause difficulty abducting the shoulder?

Deltoid Signup and view all the answers

Which nerve innervates the anterior forearm muscles, except flexor capri ulnaris?

Median nerve Signup and view all the answers

What is the largest nerve in the body?

Sciatic nerve Signup and view all the answers

Which nerve innervates the posterior leg muscles like gastrocnemius and soleus?

Tibial nerve Signup and view all the answers

The femoral nerve innervates which group of muscles?

Anterior thigh muscles Signup and view all the answers

Which nerve innervates the external anal and urethral sphincter?

Pudendal nerve Signup and view all the answers

Damage to which muscle can cause wrist drop?

Brachioradialis Signup and view all the answers

Which nerve innervates the medial thigh muscles like gracilis and abductor longus?

Obturator nerve Signup and view all the answers

What is clinically used to predict potential damage to spinal nerves?

Dermatomes Signup and view all the answers