Lab Test #3

Question 0

What are the components of a reflex arc in order?

Answer 0

Sensory receptor
Sensory neuron
Dorsal root
Inter neuron
Ventral root
Motor neuron
Effector organ

Question 1

What is a reflex arc?

Answer 1

A functional unit of the nervousness system that is capable of recovering a stimulus yielding a response.

Question 2

What does the pons do?

Answer 2

Respiratory center

Relay center for info

Question 3

Medulla?

Answer 3

Connects to spinal cord

Blood pressure and respiratory rate

Question 4

Hypothalamus?

Answer 4

Pituitary gland with endocrine functions

Question 5

Thalamus?

Answer 5

Wall around third ventricle

Receives almost all sensory info and sends to cerebral cortex

Question 6

Pineal gland?

Answer 6

Secretes melatonin which regulates rhythms.

Question 7

Pituitary?

Answer 7

Controls other glands.

Under hypothalamus.

Question 8

Parts of medulla?

Answer 8

Optic chiasma - where optic nerves cross

Lateral ventricles - flow of CSF

Question 9

Cervical plexus?

Answer 9

C1-4

Phrenic

Question 10

Brachial plexus?

Answer 10

C5-T1

Axillary radial musculocutaneous ulnar median

Question 11

Lumbar Plexus?

Answer 11

L1-4

Obturator femoral

Question 12

Sacral Plexus?

Answer 12

L4-S4

Tibial perineal ischialic

Question 13

Cones?

Answer 13

Color and fine detail

Question 14

Rods?

Answer 14

Shape for dim light

Question 15

Pupillary reaction?

Answer 15

Dilated in low light

Constricted in high light

Question 16

Meissner corpuscles?

Answer 16

Light touch upper dermis

Question 17

Merkel discs?

Answer 17

Light touch in upper dermis and lower epidermis

Question 18

Pacinian (lamellated) corpuscles?

Answer 18

Sense pressure like when against a wall or feel vibration

Question 19

Flow of tears in order?

Answer 19

1 lacrimal gland and duct

2 surface of eye

3 lacrimal canaliculi

4 nasolacrimal duct

5 nasal cavity

Question 20

6 eye muscles?

Answer 20

Lateral rectus - lateral

Medial rectus - medially

Superior rectus - superiorly

Inferior rectus - inferiorly

Inferior oblique - superiorly and laterally

Superior oblique - inferiorly and laterally

Question 21

Astigmatism?

Answer 21

When the cornea or lens aren’t perfectly smooth

Question 22

Blind spot?

Answer 22

The optic disk where no photoreceptors reside

Question 23

Myopia?

Answer 23

Nearsighted

Question 24

Hyperopia?

Answer 24

Farsightedness

Question 25

Near point of vision?

Answer 25

Minimum distance an object can be held in focus

Question 26

Color blindness?

Answer 26

A deficiency in one of three cones red green or blue sensitive. Change in gene on X chromosome

Question 27

Baranys test?

Answer 27

Tests visual responses to changes in balance.

Question 28

Rinne test?

Answer 28

A test which sees if air conduction is more effective than one conduction

Question 29

Romberg test?

Answer 29

Static balance

Question 30

Weber

Answer 30

A test to see if there is conductive or asymmetrical hearing loss.

Question 31

Postural test

Answer 31

Maintains upright position

Question 32

Olfactory reflex?

Answer 32

Negative reflex to foul odor