Neural Control ...

Find out the mismatched pair :

Complete the following hierarchical chart showing parts of nervous system :

Blood vessels are found to be presentin whichregion of eye?

Reticular activating system (RAS) of brain :
i. it works as a bridge to connect the lower brain to the upper brain.
ii. it helps usto focus on the important things and evade the useless things.

In the following figure a synapse is shown :

 i& ii (from up to down)

1) (i) is presynaptic membrane and (ii) is postsynaptic membrane.
2) synaptic vesicles are in postsynaptic knob.
3) neurotransmitter receptors are located on postsynaptic membrane.

Sneha ceased to get smell of a perfume applied to her clothes but her friend Reema who passed by complimented her for the noticeable fragrance. This is an example of :

The choroid layer in human eye :

i. darkens the cavity of eyeball to prevent internal reflection of light.
ii. its blood vessels nourish the retina.
iii. it regulates shape of eye lens.

Due to refractory period , a nerve fibre in human body on an average transmits about :

Among photoreceptors cones are responsible for bright light vision and they also :

i. give colour vision because they contain 3 different pigments.
ii. pigments are sensitive to red,green and yellow lights.
iii. pigments are sensitive to red,green and blue lights.
iv. individual cone cell contains all the three pigments in it.

Read the following :

i. In human iris, contraction of sphincter muscles widens the pupil in dim light to let in more light.
ii. The amount of pigment in the ciliary body of eye provides eye with its characteristic colour.

Read the following about the surface of cerebral hemispheres 

i. Is made up of the pia matter.
ii. Is greatly convoluted and called the cerebral cortex.

While crying, tears come out of eyes but some watery fluid comes out of nose as well. This fluid is

Human internal ear is :

The autonomic nervous system or ANS :

i. Is truly autonomic i.e. independent of the CNS.
ii. Is also known as the VNS.
iii. Transmit impulse from CNS to involuntary organs and smooth muscles.

The correctly matched pair is :

Read the following : 

i. insects have taste receptors on their feets.
ii. crickets have ears on the legs.
iii. snakes are highly sensitive to air borne sounds.
iv. frogs have colour vision

Match the ear part and their shapes :

In the prosencephalon, first and second ventricles open into third ventricle by :

The band of nerve fibers that joins the two cerebral hemisphere in mammals is :

Vermis is a portion of :