Biology : Neural Control and Coordination

The unidirectional transmission of a nerve impulse through nerve fibre is due to :

• neurotransmitters are released by axon endings

• neurotransmitters which are released by dendrites

• nerve fibre which is insulated by a medullary sheath

• sodium pump which starts operating into the nerve fibre

Sensory receptor of warmth located principally at the tip of fingers is known as :

• Weber's organ

• organ of Giraldes

• Ruffini's corpuscles

• organ of Zuckerkandl

Which of the following part of human brain is associated with integration of sympathetic and parasympathetic activities ?

• Cerebrum

• Neopallium

• Hypothalamus

• Medulla oblongata

Arbor-vitae is composed of

• grey matter

• neurogleal cells

• white matter

• all of the the above

Cranium is made up of

• 8 bones

• 12 bones

• 10 bones

• 16 bones

Human brain has greater development of

• cerebrum

• cerebellum

• optic lobes

• medulla oblongata

Foramen magnum is situated in

• buccal cavity 

• base of skull

• left auricle 

• vertebrae

The genes and splenium in brain are associated with

• cerebellum

• crebrum

• medulla oblongata

• vermis

In the myopia eye defect, the rays of light :

• do not enter the eye at all

• meet at a focus in front of the retina

• come to a focus at back of retina

• come to a focus in between retina and iris

The 'end organs of Ruffini' are receptors of :

• heat

• cold

• pressure

• touch