human coordination and response

Question 1

difference in voluntarily response compared to involuntarily reaction ?

Answer 1

use of the brain through the spinal chord when the sensory neuron enter the CNS

Question 2

what is the CNS made generally of ?

Answer 2

brain and spinal chord

Question 3

chain of happenings in involuntary reaction ?

Answer 3

stimulus->receptor->sensory->CNS(relay)->motor neuron->effector->response

Question 4

def of stimulus ?

Answer 4

change that leads to a response sent in electric signals

Question 5

def of receptor ?

Answer 5

specialized cells detect stimulus

Question 6

use of parts in motor neuron ?

Answer 6

mycelium sheath = insulates axon->speeds up conductivity
axon = carries impulse to effector
dendrites = to receive signal

Question 7

describe what happens with reflexes

Answer 7

receptor in the __ detects stimulus of ___
sensory neuron carries electrical impulse from receptor to the relay neuron in the CNS
chemical transmitter released to diffuse across the synapse between sensory and relay then relay to motor
triggers electrical nerve impulse in motor neuron contracting the effector to _____

Question 8

what is the use of chemical neuro transmitters ?

Answer 8

to help conduct the electrical impulse past the gap between neurons

Question 9

what do cones detect ?

Answer 9

red green and blue

Question 10

what do rods detect ?

Answer 10

monochromatic light

Question 11

circular muscles and radial muscles in brighter light?

Answer 11

circular muscles contract
radial muscles relax
eye constricts

Question 12

circular muscles and radial muscles in dimmer light?

Answer 12

circular muscles relax
radial muscle contracts
eye dilates

Question 13

eyes on distant objects ?

Answer 13

light ray - nearly parallel
cornea - bends light
radial muscles - contract
ciliary muscles - relax
causes suspensory ligaments - taught
causes lens - thin
light bends - little

Question 14

eyes on close objects ?

Answer 14

light ray - divergent
cornea - bends light
radial muscles - relax
ciliary muscles - contracts
causes suspensory ligaments - slack
causes lens - thick
light bends - more

Question 15

def of fovea ?

Answer 15

point on the retina with the most dense cones and rods

Question 16

where does light focus on long sighted eyes ?

Answer 16

light focuses behind the fovea

Question 17

where does light focus on short sighted eyes ?

Answer 17

before fovea

Question 18

what is the normal human temperature ?

Answer 18

37

Question 19

how do human cool down(3 points)

Answer 19

sweating
hair lies flat
vasodilation of blood vessels

Question 20

explain how sweating cools you down ?

Answer 20

sweat moves heat away from the body via conduction and then evaporates

Question 21

explain how hair cools you down ?

Answer 21

lies flat allows air to pass by the skin allowing cool air to conduct heat away from the body

Question 22

explain how blood cells cool you down

Answer 22

vasodilation
more blood near the surface
more heat lost to environment

Question 23

ways to warm up

Answer 23

shivering
hair stand on end
vasoconstriction

Question 24

how does shivering help warm the body

Answer 24

increased muscle contraction
increased energy needed
more respiration needed
more heat from respiration

Question 25

how does hair help warm the body

Answer 25

traps air less heat loss

Question 26

how does vasoconstriction help warm the body

Answer 26

narrow less blood flow near the surface less heat loss

Question 27

where is the ADH secreted and what is the use of it

Answer 27

water becomes absorbed pituitary

Question 28

where is the FSH and LH secreted and what is the use of it

Answer 28

control of menstrual cycle pituitary

Question 29

where is the thyroxine secreted and what is the use of it

Answer 29

regulates metabolism thyroide

Question 30

where is the glucagon and insulin secreted and what is the use of it

Answer 30

regulates blood sugar pancreas

Question 31

where is the adrenaline secreted and what is the use of it

Answer 31

increase heart rate adrenal

Question 32

where is the estrogen secreted and what is the use of it

Answer 32

control development of female secondary characteristics ovary

Question 33

where is the progesterone secreted and what is the use of it

Answer 33

regulates menstrual cycle ovary

Question 33

where is the testosterone secreted and what is the use of it

Answer 33

control development of male secondary characteristics testes

Question 34

path of action for adrenaline

Answer 34

exposure to stimulus induces stress body prepares for fight or flight adrenalin released by adrenal glands adrenaline binds to receptors in the heart heart contract more often and with more force muscles receive more oxygen and glucose for respiration

Question 35

use of insulin

Answer 35

normal blood sugar eat blood sugar increases pancreases release insulin liver converts glucose to glycogen normal blood sugar

Question 36

use of glucagon

Answer 36

normal blood sugar exercise blood sugar decreases pancreases release glucagon liver converts glycogen to glucose normal blood sugar levels