[\"Cardiomyocytes\", \"Cone\", \"Rod\"] cells in the fovea have a 1:1 ratio with

Question

["Cardiomyocytes", "Cone", "Rod"]         cells in the fovea have a 1:1 ratio with ganglion cells, which
["decreases", "increases", "reduces", "magifies"]         visual acuity and
["maintains", "magnifies", "increases", "decreases"]         light sensitivity

Match the description with a division of the autonomic nervous system

Both preganglionic and postganglionic neurons release acetylcholine

      [ Choose ]            sympathetic            parasympathetic      

Preganglionic neurons release acetylcholine, but postganglionic neurons release norepinephrine

      [ Choose ]            sympathetic            parasympathetic      

Stimulation of muscarinic receptors in target organ

      [ Choose ]            sympathetic            parasympathetic      

Stimulation of adrenergic receptors in target organ

      [ Choose ]            sympathetic            parasympathetic      

Explanation / Answer

CARDIOMYOCYTES:

Cardiomyocytes are the muscle cells that makeup the cardiac muscle. They contain only one nucleus.

Rod cells have high sensitivity to light. They contain photo pigment rhodopsin. Rod is responsible for dark vision. Cone cells have low sensitivity to light. The cone is responsible for day time or photo or colour vision.

ACETYL CHOLINE:

The acetyl choline is released in the autonomic nervous system. The acetyl choline is released from both the pre and post PARASYMPATHETIC neurons, because these are mostly cholinergic and acetyl choline is the primary neurotransmitter in cholinergic neurons.

NOREPINEPHRINE:

The preganglionic neurons release acetyl choline but post ganglionic neurons of SYMPATHETIC division release norepinephrine, because these are mostly adrenergic. The epinephrine and norepinephrine are the primary neurotransmitters in the sympathetic division.

MUSCARNIC RECEPTORS:

The muscarnic receptors show G- protein coupled responses. There are 5 types of muscarnic receptors. these are PARASYMPATHOMIMETICS. The stimulation of muscarnic receptors in target action shows parasympathetic action.

ADRENERGIC RECEPTORS:

The adrenergic receptors are the receptors which stimulate sympathetic nervous system. These are SYMPATHOMIMETICS. They mimic the effect of the SYMPATHETIC NERVOUS SYSTEM. The stimulation of the adrenergic receptors in target organ shows sympathetic action.

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