Neural coordination - Part - 1

Receptor sites for neurotransmitters are present on

• a) membrances of synaptic vesicles

• b) pre-synaptic membrane

• c) tips of axons

• d) post-synaptic membrane

Myelin sheath is produced by

• (a) Schwann cells and Oligodendrocytes

• (b) Astrocytes and Schwann cells

• (c) Oligodendrocytes and Osteoclasts

• (d) Osteoclasts and Astrocytes

Which of the following statements is correct about node of Ranvier?

• (a) Axolemma is discontinuous

• (b) Myelin sheath is discontinuous

• (c) Both neurilemma and myelin sheath are discontinuous

• (d) Covered by myelin sheath

Which of the following is regarded as a unit of nervous tissue?

• (a) Myelin sheath

• (b) Axons

• (c) Dendrites

• (d) Neurons

The junction between the axon of one neuron and the dendrite of the next is called

• (a) junction point

• (b) a synapse

• (c) a joint

• (d) constant bridge

Afferent nerve fibres carry impulses from

• (a) effector organs to CNS

• (b) receptors to CNS

• (c) CNS to receptors

• (d) CNS to muscles

Which part of the brain is responsible for thermoregulation?

• (a) Hypothalamus

• (b) Corpus callosum

• (c) Medulla oblongata

• (d) Cerebrum

The human hindbrain comprises three parts, one of which is

• (a) spinal cord

• (b) corpus callosum

• (c) cerebellum

• (d) hypothalamus

Which one of the following do not act as a neurotransmitter?

• (a) Acetylcholine

• (b) Epinephrine

• (c) Norepinephrine

• (d) Cortisone

What used to be described as Nissl’s granules in a nerve cell are now identified as

• (a) ribosomes

• (b) mitochondria

• (c) cell metabolites

• (d) fat granules