Nervous System (IV)

Question 1

Make up of CNS

Answer 1

Spinal cord and Brain

Question 2

Make up of PNS

Answer 2

Spinal and cranial nerves

Question 3

Between each 2 vertebrae there is

Answer 3

1 nerve

Question 4

Nerve hairs at the end of the spinal cord

Answer 4

Cauda equina

Question 5

PNS breaks up into

Answer 5

Autonomic and Somatic

Question 6

Somatic is _____

Answer 6

Voluntary

Question 7

Autonomic breaks down into

Answer 7

Sympathetic and Parasympathetic

Question 8

Sympathetic

Answer 8

Fight or flight

Question 9

Parasympathetic

Answer 9

Rest and digest (Basal)

Question 10

Neocortex deals with

Answer 10

Memory and consciousness

Question 11

Olfactory bulb is on the

Answer 11

Forebrain

Question 12

Mesencephalon or midbrain controls

Answer 12

Hindbrain sensors

Question 13

Cerebellum (hindbrain)

Answer 13

Movement and coordination; regulates motor activities

Question 14

Medulla oblongata (hindbrain) and Pons

Answer 14

Control breathing; Linked to emotional and behavioral responses

Question 15

Spinal cord starts at

Answer 15

Foramen magnum

Question 16

What are the 3 sensory cranial nerves?

Answer 16

Olfactory, optic and vestibulocochlear nerves

Question 17

What are the 5 motor cranial nerves?

Answer 17

Oculomotor, trochlear, abducent, spinal accessory and hypoglossal nerves

Question 18

What are the 4 mixed cranial nerves?

Answer 18

Trigeminal, facial, glossopharyngeal and vagus nerves

Question 19

What is the importance of the vagus nerve?

Answer 19

Parasympathetic nerve only on left side. If touched, heart slows or even stops beating. Inflammation of this nerve is not good.

Question 20

Colic typically comes with an increased

Answer 20

Heart rate. If a horse has colic and has a low heart rate, his vagal nerve may be being impacted by colic

Question 21

Sensory nerves are _____

Answer 21

Afferent (travel uphill)

Question 22

Motor nerves are _____

Answer 22

Efferent (travel downhill)

Question 23

Sensory and motor nerves always

Answer 23

Work together

Question 24

Brain and spinal cord are encased by _____ and cushioned by _____

Answer 24

Meninges; cerebrospinal fluid (CSF)

Question 25

CSF provides

Answer 25

Nutrients to CNS

Question 26

What are the 3 meninges layers?

Answer 26

Dura mater
Arachnoid
Pia mater

Question 27

Which meninges layer is closest to the spinal cord?

Answer 27

Pia mater

Question 28

Examples of fight/flight response of the _____

Answer 28

Increased HR, BP, dry mouth, sweat, dilated pupils and bronchioles, slows gut movements

Sympathetic

Question 29

Bundle of nerves right at the shoulder of the horse - sensitive area

Answer 29

Brachial plexus