Top 150+ Solved Nervous System MCQ Questions Answer

a. are involved with myelin production

b. are scavenger cells

c. are performed in the brain

d. are important in GABA uptake

e. induce capillaries to form tight junctions and thus the blood brain barrier

a. A-alpha

b. A-beta

c. A-delta

d. B

e. C

a. increased by acetylcholine

b. decreased by activation of phospholipase C

c. increased by cold

d. decreased by cAMP

e. increased by stretch

a. multi-unit smooth muscle is present in the jejunum

b. may exhibit pacemaker potentials

c. mechanical response is much slower than striated muscle

d. the membrane potential is unstable

e. functions as a syncytium in viscera

a. contains two separate halves of an A-band and an I-band

b. is the space between two A-bands

c. is between two Z-lines

d. has the T-system of the sarcotubular system at sarcomere junctions

e. contracts when the troponin molecule binds to the myosin head

a. have fast glycolytic rates

b. have low oxidative capacity

c. are more commonly found in muscle that performs explosive work

d. do not have a very high glycolytic capacity

e. are not abundant in endurance athletes

a. resting membrane potential is about -90mV

b. energy source at rest is mainly fat

c. mechanical response lasts about twice as long as electrical response

d. tetanus cannot occur

e. it has an all-or-nothing contractile response

a. it causes skeletal muscle hypertrophy

b. does not lead to fibrillation

c. causes hyposensitivity to acetylcholine in skeletal muscle

d. smooth muscle is able to contract if it occurs in vivo

e. causes fasciculations

a. A-beta

b. A-gamma

c. A-delta

d. B

e. C

a. C

b. A-alpha

c. B

d. A-gamma

e. A-beta

a. phosphorylcreatine

b. fatty acids

c. glucose

d. glycogen

e. creatine

a. adaptation occurs over the temperature range 20-40°C

b. pain is sensed by naked nerve endings

c. pacinian corpuscles are rapidly adapting touch-pressure receptors

d. naked nerve endings can detect all four cutaneous sensory modalities

e. any given nerve ending can signal more than one sensory modality

a. glutamate is excitatory

b. GABA is inhibitory at presynaptic neurons

c. glycine is excitatory at postsynaptic neurons

d. GHB (gamma hydroxybutyrate) is inhibitory

e. aspartate is excitatory

a. is classically initiated by tapping on the quadriceps muscle

b. is initiated by stretch of the muscle

c. involves impulses being conducted from the muscle spindle to the motor cortex

d. involves extrafusal fibres stimulating annulospiral and flowerspray sensory fibres

e. involves gamma afferents of leksell

a. actin

b. myosin-II

c. tropomyosin

d. almodulin

e. troponin