Chapter 21: Neural Control and Coordination

Chemicals which are released at the synaptic junction are called

a. Hormones

b. Neurotransmitters

c. Cerebrospinal fluid

d. Lymph

The potential difference across the resting membrane is negative. This is due to

the differential distribution of the following ions

. Na⁺ and K⁺

b. CO₃⁺⁺ and CI

c. Ca⁺⁺ and Mg⁺⁺

d. Ca⁺⁺ and CI

Resting membrane potential is maintained by

a. Hormones

b. Neurotransmitters

c. Ion pump

d. None of the above

The function of our visceral organs is controlled by

a. Sympathetic and somatic neural system

b. Sympathetic and parasympathetic neural system

c. Central and somatic nervous system

d. None of the above

Which of the following is not involved in Knee-jerk reflex?

a. Muscle spindle

b. Motor neuron

c. Brain

d. Interneurons

An area in the brain which is associated with strong emotions is

a. Cerebral cortex

b. Cerebellum

c. Limbic system

d. Medulla

Mark the vitamin present in Rhodopsin

a. Vit A

b. Vit B

c. Vit C

d. Vit D

Human eyeball consists of three layers and it encloses

a. Lens, iris, optic nerve

b. Lens, aqueous humour and vitreous humour

c. Cornea, lens, iris

d. Cornea, lens, optic nerve

Wax secreting gland present in the ear canal is called

a. Sweat gland

b. Prostate gland

c. Cowper’s gland

d. Ceruminous gland

The part of the internal ear responsible for hearing is

a. Cochlea

b. Semicircular canal

c. Utriculus

d. Sacculus