The nervous system found in Hydra Jelly fish and their relatives is:

A. Diffused nervous system
B. Centralized nervous system
C. Peripheral nervous system
D. Autonomic nervous system

One of the following are known as electromagnetic receptors:

A. Photoreceptors
B. Nociceptors
C. Chemoreceptors
D. Thermoreceptors

The cytoplasmic process that arise from the neuron cell body and carry impulses away cell body are termed:

A. Pacinian corpuscles
B. Nissl’s granules
C. Axons
D. Free nerve endings

Which of the following act on basal metabolic rate by stimulating the breakdown of glucose and release of heat and generation of ATP:

A. Thyroxine
B. Tri-iodothyronine (T3)
C. Calcitonin
D. Both a & b

Which of the followings show diffused type of nervous system?

A. Hydra
B. Planaria
C. Frog
D. Man

The structures, which respond when they stimulated by impulse coming via motor neuron, is:

A. Receptors
B. Effectors
C. Schwann cells
D. both a & b

One of the followings acts synergistically with prolactin to maintain the corpus luteum:

A. Follicle stimulating hormone
B. Luteinizing hormone
C. Thyroid stimulating hormone
D. Somatotropin

The electrical potential that exists across a cell membrane is known as:

A. Membrane potential
B. Electrical potential
C. Resting potential
D. Action potential

Which of the following hormones is an amino acid or its derivative?

A. Thyroxine
B. epinephrine
C. Norepinephrine
D. All of these

The principal effectors are:

A. Glands
B. Muscles
C. Neurons
D. both a & b