Tracts and Pathways

Question 1

Located in the pre central gyrus, this is the major control region of the cerebral cortex for initiation of voluntary movements

Answer 1

primary motor area

Question 2

Direct pathways conveying impulses from the cerebral cortex to the spinal cord that result in precise, voluntary movements

Answer 2

pyramidal pathways

Question 3

Contains motor neuron that control skilled movements of the hands and feet

Answer 3

Lateral corticiospinal tract

Question 4

Tracts include rubrospinal, tecospinal, vestibulospinal, lateral reticulospinal, and medial reticulospinal

Answer 4

Extrapyramidal pathways

Question 5

Contain neurons that help initiate and terminate movements; can suppress unwanted movements; influence muscle tone

Answer 5

Basal Ganglia

Question 6

Carries impulses for pain, temperature, tickle, and itch

Answer 6

Anterolateral (spinothalamic) pathway

Question 7

The major routes relaying proprioceptive input to the cerebellum; critical for posture, balance, and coordination of skilled movements

Answer 7

Spinocerebellar tracts

Question 8

Composed of axons of first order neutrons; include the gracile fascicles and cuneate fasciculus

Answer 8

Posterior column

Question 9

Contains motor neurone that coordinate movements of the axial skeleton

Answer 9

Anterior corticospinal tract

Question 10

Contains axons that convey impulses for precise, voluntary movements of the eyes, tongue, and neck, plus chewing, facial expression, and speech

Answer 10

Corticobulbar tracts

Question 11

conveys sensations of touch, conscious proprioception, pressure, and vibration the cerebral cortex

Answer 11

Posterior column-medial lemniscus pathway

Question 12

Carries impulses for most somatic sensations from the face, nasal cavity, oral cavity, and teeth

Answer 12

Trigenimothalamic pathway

Question 13

receptors located in muscles, tendons, joints, and the inner ear

Answer 13

proprioceptors

Question 14

receptors located in blood vessels, visceral organs, muscles, and the nervous system

Answer 14

interoceptors

Question 15

receptors that detect temperature changes

Answer 15

thermoreceptors

Question 16

receptors that detect light that strikes the retina of the eye

Answer 16

photoreceptors

Question 17

receptors located at or near the external surface of the body

Answer 17

exteroceptors

Question 18

bare dendrites associated with pain, thermal, tickle, itch, and some touch sensations

Answer 18

free nerve endings

Question 19

receptors that provide information about body position, muscle tension, and position and activity of joints

Answer 19

proprioceptors

Question 20

receptors that sense osmotic pressures of body fluids

Answer 20

osmoreceptors

Question 21

receptors that detect chemicals in the mouth, nose, and body fluids

Answer 21

chemoreceptors

Question 22

receptors that detect mechanical pressure or stretching

Answer 22

mechanoreceptors

Question 23

receptors that respond to stimuli resulting from physical or chemical damage to tissues

Answer 23

nociceptors

Question 24

dendrites enclosed in a connective tissue capsule

Answer 24

encapsulated nerve endings