Multiple Choice QuestionsCochlea of mammalian internal ear is concerned with
hearing
balance of body posture
both (a) and (b)
perception changes of atmospheric pressure
The part of an eye which acts like a diaphragm of a photographic camera is
pupil
iris
lens
cornea
The dendrite carries impulses
towards the cyton
away from cyton
across the body
from one neuron to another
Cerebrospinal fluid is present
beneath the pia mater
between piamater and arachnoid
between arachnoid and duramater
between duramater and cranium
Arbor-vitae is composed of
grey matter
neurogleal cells
white matter
all of the the above
A.
grey matter
The arbor vitae (Latin for "tree of life") is the cerebellar white matter, so called for its branched, tree-like appearance. In some ways it more resembles a fern and is present in both cerebellar hemispheres. It brings sensory and motor information to and from the cerebellum.
In cerebellum strips of white matter profusely ramify into the folds of grey matter. This system of branched strips of white matter within each cerebellar hemisphere is called Arbor-vitae".
Which of the following part of human brain is associated with integration of sympathetic and parasympathetic activities ?
Cerebrum
Neopallium
Hypothalamus
Medulla oblongata
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
Switch
