Quiz on Spinal Cord Structure and Function

How many segments does the spinal cord consist of?

• 29

• 32

• 30

• 31

Which region of the spinal cord corresponds to the lumbar segment?

• Sacral

• Lumbar

• Thoracic

• Cervical

What shape is the gray matter in the spinal cord?

• Circular

• Square

• Triangular

• H-shaped

Which tract carries sensory information such as fine touch and vibration?

• Corticospinal tract

• Spinothalamic tract

• Reticulospinal tract

• Dorsal columns

What is the primary function of descending tracts?

• Carry blood supply to the spinal cord

• Transmit motor instructions from the brain

• Relay reflex actions

• Transmit sensory information to the brain

Which type of injury typically results in quadriplegia?

• Mid-cervical injuries (C5-C7)

• High cervical injuries (C1-C4)

• Thoracic injuries

• Lumbar injuries

What is the role of the spinal cord in reflex activity?

• Carry blood supply to the spinal cord

• Mediate automatic and rapid responses to stimuli

• Transmit motor instructions from the brain

• Transmit sensory information to the brain

Which tract is involved in voluntary motor control?

• Reticulospinal tract

• Spinothalamic tract

• Corticospinal tract

• Dorsal columns

What is the impact of lumbar and sacral injuries?

• No impact on motor functions

• Loss of function in respiratory muscles

• Affect hips and legs, potentially affecting walking

• Impairment of arms and upper body

What structure bisects the anterior aspect of white matter in the spinal cord?

• ventral rami

• posterior median sulcus

• ventral horn

• anterior median fissure