practical 2: reflex and response

Question 1

a rapid, predictable response to a stimulus

Answer 1

reflex

Question 2

the pathway along which the electrical signal travel

Answer 2

reflex arc

Question 3

what are the 5 parts of reflex arc

Answer 3

receptor, sensory (affarent), integration center, motor (efferent) neuron, effector

Question 4

detects a stimulus

Answer 4

receptor

Question 5

sends an electrical signal to cns

Answer 5

sensory (affarent) neuron

Question 6

consists of one or more synapses in the cns and processes the information

Answer 6

integration center

Question 7

sends electrical signal from cns to effector

Answer 7

motor (efferent) neuron

Question 8

responds appropriately

Answer 8

effector

Question 9

has only one synapse

Answer 9

monosynaptic

Question 10

what kind of synapse is pattelar reflex

Answer 10

monosynaptic

Question 11

most relflexes are

Answer 11

polysynaptic

Question 12

the more synapses involved,

Answer 12

the longer the reflex takes

Question 13

eyes allow visualization of our surroundings by processing — that is received through the —of the eye

Answer 13

light stimuli; retina

Question 14

in response to light, this reflex constricts the pupil thru the innervation of the iris sphincter muscle

Answer 14

pupillary light reflex

Question 15

what muscles adjust during pupillary light reflex

Answer 15

muscles connected to lens, ciliary bodies, and muscles that make up iris
-stimulated by several nerves

Question 16

what happens to pupils when lights turn on

Answer 16

constrict to reduce the amount of light entering eyes, protecting the retina

Question 17

what is the purpose of pupillary light reflex

Answer 17

regulate the intensity of light entering the eye by constricting or dilating the pupil

Question 18

what are the receptors and effectors in the pupillary light reflex test

Answer 18

receptor= photoreceptors/ retina
effector= inner circular muscle of iris

Question 19

what role does symp and para nerv system play in pupillary reflex

Answer 19

symp= causes dilation
para= cause constriction

Question 20

which cranial nerve causes blinking reflex

Answer 20

trigeminal= affarent
facial = efferent

Question 21

also called stretch reflex

Answer 21

patellar reflex

Question 22

initiated by tapping the patellar ligament, stretching the muscle, and stim the muscle spindle to cause a reflex contraction of quad

Answer 22

stretch reflex

Question 23

functions of stretch reflex

Answer 23

maintain posture, balance, and locomotion

Question 24

purpose of patellar reflex

Answer 24

prevent quad muscle from overstretching

Question 25

why is patellar reflex faster than other reflexes

Answer 25

monosynaptic reflex- only involves one synapse btwn sensory and motor neurons

Question 26

are reflexes somatic or autonomic

Answer 26

both somatic-skeletal reflex autonomic- smooth muscle, cardiac muscle, and glands/ this is to maintain internal homeostasis and regulation

Question 27

what are the stim, receptor, affarent, efferent, effector or pupil constriction (parasymp)

Answer 27

stim= light receptor= photoreceptors/ retina affarent= optic nerve efferent= oculomotor effector= inner circular muscle of iris

Question 28

what happens to our eyes when the light turns off

Answer 28

eyes dilate to try to allow more light to see.

Question 29

what muscle causes eye dilation

Answer 29

outer radial muscle of iris

Question 30

what are the stim, receptor, affarent, efferent, effector of blink reflex

Answer 30

stim= touch, light affarent= trigeminal efferent= oculomotor, facial effector= orbicularis oculi