#1
Which of the following is not a plexus formed by the spinal nerves?
Thoracic plexus
ExplanationThoracic plexus is not a plexus formed by spinal nerves.
#2
Which spinal nerve root innervates the quadriceps femoris muscle group?
L2-L4
ExplanationQuadriceps femoris is innervated by L2-L4 spinal nerve roots.
#3
The median nerve is derived from which spinal nerve roots?
C6-T1
ExplanationMedian nerve roots include C6 to T1.
#4
The radial nerve is derived from which spinal nerve roots?
C7-T1
ExplanationRadial nerve roots include C7 to T1.
#5
The femoral nerve is derived from which spinal nerve roots?
L2-L4
ExplanationFemoral nerve roots include L2 to L4.
#6
Which spinal nerve innervates the muscles of the diaphragm?
C3
ExplanationC3 innervates the diaphragm, crucial for breathing.
#7
Which spinal nerve is responsible for innervating the deltoid muscle?
C5
ExplanationC5 provides motor function to the deltoid muscle.
#8
Which spinal nerve root innervates the biceps brachii muscle?
C6
ExplanationBiceps brachii is innervated by the C6 spinal nerve root.
#9
Which spinal nerve root innervates the triceps brachii muscle?
C7
ExplanationTriceps brachii is innervated by the C7 spinal nerve root.
#10
Which spinal nerve root innervates the gastrocnemius muscle?
S1
ExplanationGastrocnemius is innervated by the S1 spinal nerve root.
#11
The sciatic nerve is derived from which spinal nerve roots?
L4-S3
ExplanationSciatic nerve roots include L4 to S3.
#12
Which spinal nerve root is commonly affected in carpal tunnel syndrome?
C8
ExplanationC8 is often affected in carpal tunnel syndrome.
#13
The ulnar nerve is derived from which spinal nerve roots?
C6-T1
ExplanationUlnar nerve roots include C6 to T1.
#14
Which spinal nerve root is commonly affected in sciatica?
L5
ExplanationL5 is often affected in sciatica.
#15
Which spinal nerve root innervates the serratus anterior muscle?
C5
ExplanationSerratus anterior is innervated by the C5 spinal nerve root.