CNS

Question 1

The _________ is the most superior and anterior of the brain’s major regions. It is the seat of reason, planning, memory, and sensory integration. All conscious thought originates in the cerebrum and can influence the subconscious functions of the lower regions of the brain.

Answer 1

cerebrum

Question 2

The ________ coordinates voluntary movements such as posture, balance, coordination, and speech, resulting in smooth and balanced muscular activity.

Answer 2

cerebellum

Question 3

_________ _________–medial lemniscus pathway (PCML) (also known as the dorsal column-medial lemniscus pathway) is a sensory pathway of the central nervous system that conveys localized sensations of fine touch, vibration, two-point discrimination, and proprioception (position sense) from the skin and joints.

Answer 3

Posterior column

Question 4

____________ tract primary motor pathway descending from motor cortex to brainstem (where it decussates) and thence to the spinal cord, subserving contralateral voluntary motor control; injuries to the corticospinal tract show characteristics of an upper motor neurone lesion

Answer 4

corticospinal

Question 5

________-it carries pain,fine touch and temperature sensory information (protopathic sensation) to the thalamus. It is composed primarily of fast-conducting, sparsely myelinated A delta fibers and slow-conducting, unmyelinated C fibers.

Answer 5

Lateral spinothalamic tract

Question 6

____________-This tract is primarily associated with the conduction of soft nociceptive information to the reticular formation in the thalamus.

Answer 6

Anterior spinothalamic tract

Question 7

_______________-The function of these motor commands are to alter muscle tone, extend, and change the position of the limbs and head with the goal of supporting posture and maintaining balance of the body and head

Answer 7

Vestibulospinal tract

Question 8

It is one of the pathways for the mediation of voluntary movement. The tract is responsible for large muscle movement as well as fine motor control, and it terminates primarily in the cervical spinal cord, suggesting that it functions in upper limb but not in lower limb control. It primarily facilitates flexion in the —–upper extremities —–

Answer 8

Rubrospinal tract

flex bro!!

Question 9

Responsible for controlling axial and extensor motor neurons e.g enable —extension— of the legs to maintain postural support

Answer 9

Reticulospinal Tract

to extend is cul!!

Question 10

Damage to the body above the pyramidal decussation, will cause contralateral motor deficits. For example, if there is a lesion at the pre-central gyrus in the right cerebral cortex, then the left side of the body will be affected. Whereas damage below the pyramidal decussation will result in ipsilateral motor deficits.

Answer 10

Lateral corticospinal tract

flexors of the extremities

Question 11

tract innervates muscles involved in fine control of the limbs. flexors of the trunk

Answer 11

Anterior//ventral corticospinal tract