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

Potential difference across resting membrane is negative. This is due to differential distribution of the following ions

• a.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 para sympathetic 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, acquous humor and vitreous humor
• 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 internal ear responsible for hearing is

• a.Cochlea
• b.Semicircular canal
• c.Utriculus
• d.Sacculus

The organ of corti is a structure present in

• a.External ear
• b.Middle ear
• c.Semi circular canal
• d.Cochlea

Complete the statement by choosing appropriate match among the following -

• a.Resting potential i. chemicals involved in the transmission of impulses at synapses.
• b.Nerve impulse ii. gap between the pre synaptic and post synaptic neurons
• c.Synaptic cleft iii. electrical potential difference across the resting neural membrane
• d.Neurotransmitters iv. an electrical wave like response of a neuron to a stimulation.