Ans

Front 1

What is a motor system - an involuntary motor system, i.e. needs no conscious control.

Back 1

Autonomic Nervous System (ANS)

Front 2

Each "functional unit" consists of ___ ___ in series conducting from the CNS to the periphery.

Back 2

two neurons

Front 3

The 1st neuron whose cell body is located in the brain or in the spinal cord and extends to a peripheral ganglion is called a

Back 3

preganglionic neuron

Front 4

The second neuron is located somewhere outside the brain and the spinal cord and is called a

Back 4

postganglionic neuron

Front 5

One can divide the ANS on the basis of how the preganglionic fibers leave the CNS:

Back 5

1.Fibers leaving the CNS with cranial nn. (III, VII, IX, X); 2.Fibers leaving the CNS with the thoracic and lumbar spinal nn.(T1 to L2 or L3); 3.Fibers leaving the CNS with the sacral spinal nn.(S2, 3, 4).

Front 6

is grouped together because of their anatomical similarity and is spoken of as the___ division of the ANS.

Back 6

sympathetic

Front 7

is grouped together because there is similarity in location of their ganglia (at the site of the organ innervated). In general, (1) and (3) are anatomically similar and are referred to as the ___ division of the ANS.

Back 7

parasympathetic

Front 8

What are the principal differences between parasympathetic & sympathetic divisions?

Back 8

Parasympathetic ganglia are located in or very close to the organs they innervate. They have long preganglionic cells and short postganglionic cells. Sympathetic ganglia are located in the sympathetic trunk and are located at some distance from the organs they innervate. Hence, they have short preganglionic cells and long postganglionic cells (except, splanchnic nn.).

Front 9

___ ganglia are located in the sympathetic trunk and are located at some distance from the organs they innervate. Hence, they have___ preganglionic cells and ___ postganglionic cells (except, splanchnic nn.).

Back 9

sympathetic; short; long

Front 10

___ ganglia are located in or very close to the organs they innervate. They have ___ preganglionic cells and ___ postganglionic cells.

Back 10

Parasympathetic; long; short

Front 11

Target organs =

Back 11

organs which postganglionic neurons innervate

Front 12

The target organs of the ANS are:

Back 12

smooth mm., cardiac m., and glands.

Front 13

Functions of sympathetic

Back 13

fight or flight functions e.g.- dilate blood vessels in skeletal mm.; constrict blood vessels in gut; dilate pu;il; stimulates sweat glands; increases heart rate

Front 14

Functions of parasympathetic

Back 14

vegetative e.g. - peristalsis - opposite of sympathetic

Front 15

Arises from T1 - L2.

Back 15

sympathetic

Front 16

Preganglionic fibers are

Back 16

myelinated

Front 17

Postganglionic fibers are

Back 17

unmyelinated

Front 18

what system is also organized on basis of pre- and postganglionic neurons.

Back 18

parasympathetic

Front 19

In the parasympathetic nervous system The ____ neurons leave the CNS with cranial nn. III, VII, IX, X or sacral nn. of the spinal cord.

Back 19

preganglionic

Front 20

In the parasympathetic nervous system the ____ axons merge as a component of a cranial n. or as a part of the anterior root of a sacral n.

Back 20

preganglionic

Front 21

preganglionic axons of the ___ leave the nerve with which they are associated and pass to organs which they innervate such as cardiac m., smooth m., and glands.

Back 21

parasympathetic

Front 22

___-ganglionic neuron synapse with their ___-ganglionic neurons in ganglia near or in the organ they innervate;

Back 22

pre; post

Front 23

___ ganglia are not regularly spaced as are the ___ ganglia of the sympathetic trunk.

Back 23

parasympathetic; sympathetic

Front 24

Many ___ ganglia are of microscopic size

Back 24

parasympathetic