Anatomy I Review

Injury to which nerve would cause paralysis of the muscle labeled with the dot?

• Femoral
• Obturator
• Sciatic nerve, common fibular portion
• Sciatic nerve, tibial portion

The muscle labeled with the dot attaches to the distal phalanx of ________ of the _________ foot.

• Digit 1, left
• Digit 1, right
• Digits 2 - 5, left
• Digits 2-5, right

The thoracic region of the spinal cord has _______ segments with their associated spinal nerves exiting through the intervertebral foramen ________ the vertebra with the same label.

• 8, above
• 8, below
• 12, above
• 12, below

The axons of somatic efferent neurons pass through the _______ root while their cell bodies reside within _______.

• Ventral, the gray matter of the spinal cord
• Ventral, a ganglion associated with the root
• Dorsal, the gray matter of the spinal cord
• Dorsal, a ganglion associated with the root

a 74 year old male presents with complaints of difficulty ascending and descending stairs using his right lower limb. During physical examination, you find diminished sensation through the medial knee, knee extension weakness, and an impaired quadriceps reflex. Which spinal nerve is most likely involved?

• L1
• L3
• L5
• S2

The ability of diaphragm in _________ intra-thoracic pressure during inspiration would be expected in a patient with a spinal cord injury at the _______ level.

• Decreasing, C3
• Decreasing, C7
• Increasing, C3
• Increasing, C7

A patient is experiencing __________ incontinence in association with coughing and exertion. During physical examination, impairments in __________ of the pelvic floor during contraction are most likely to be found.

• Stress, depression
• Stress, elevation
• Urge, depression
• Urge, elevation

Which provides direct motor innervation to the intrinsic muscles of the spine?

• Ventral remus
• Dorsal ramus
• Dorsal root
• Ventral root

In moving from erect standing into left lateral flexion of the spine, which best describes the type of contraction performed by the right erector spinae?

• Concentric
• Isometric
• Eccentric

Which functions primarily in a stabilizing role?

• Intertransversarii
• Multifidus
• Spinalis
• Interspinalis