Animal science lecture part 4

Question 1

sensory cells are part of what

Answer 1

afferent neuron

Question 2

Machanoreceptor receptors

Answer 2

sense pressure and then shrink pr stretch

Question 3

chemoreceptors

Answer 3

sense chemicals

Question 4

Thermoreceptors

Answer 4

sense changes in temperature

Question 5

photoreceptors

Answer 5

sense photons or light waves

Question 6

Pacinian corpuscle

Answer 6

type of machanoreceptor on skin

Question 7

Nociceptors

Answer 7

Pain receptors, sense tissue damage including chemoreceptors, mechanoreceptors, and thermoreceptors

Question 8

propireceptors

Answer 8

awareness of location in space
-incolves machorecpetors in joints, muscles and tendons
-balance and vision are also apart of this

Question 9

muscle spindles

Answer 9

-tell your muscles how much they are stretching
-activate afferent neurons

Question 10

Golgi tendon organs

Answer 10

can tell how much tension is on tendons

Question 11

where do the afferent neruon enter

Answer 11

the dorsal nerve root

Question 12

where do the efferent neurons enter

Answer 12

the ventral nerve root

Question 13

spinal nerve

Answer 13

the converging of the affernt and effent nerves

Question 14

somatic nervous system

Answer 14

efferent neurons providing VOUNTARY control of the skeletal muscle. both can be part of the reflux arc

Question 15

autonomic nervous system

Answer 15

efferent neurons providing INVOLUNTARY control of glands, cardiac muscle, the smooth muscle around organs, airways and blood vessels.

Question 16

Relfex arc

Answer 16

Quick reactions to environemntal stimuli.

Question 17

Sympathetic nervous system

Answer 17

speeds things up

Question 18

Parasympatheitc Nevous system

Answer 18

Reduced effector actitivty. Extend from the cranial and sacral regions. “breaks” and the “rest and digest”

Question 19

Sympatheitc nervous system

Answer 19

Fight or flight. extends from the thoracic and the lumbar regions or the veterbrea

Question 20

medulla oblongata

Answer 20

part in the brain stem that is the control center for the autonomic nervous system

Question 21

Ganglion

Answer 21

Rely center for the parasympathetic nervous system

Question 22

Pre-ganglion

Answer 22

Neurons upstream of the galnglion ACH release

Question 23

post-ganglion

Answer 23

neurons downstream of the ganglions Noreipiencephien

Question 24

which have galgion

Answer 24

parasympathetic neurons

Question 25

what do sympathetic preganglionic neurons release?

Answer 25

acytalcholine

Question 26

PNS relsease

Answer 26

ach in both ends of the galglion

Question 27

Craninal Nerve X

Answer 27

is a major route for autonomic neurons to these tissues, aka the vagus nerve

Question 28

Splanchnic nerve

Answer 28

sympathetic pre-ganglionic neuron that directly enters the adrenal glands and causes it to release epinephrine

Question 29

Chromaffin cells

Answer 29

release norepinephrine epinephrine into the blood and is on the adrenal gland

Question 30

what does epinephrine do

Answer 30

really hightens everything, not entended for homestais and is short term

Question 31

Enteric nervous system

Answer 31

controls the digestive tract without the autonomic nervous system
-consists of two layers of nerves