Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

A & P: 2 > sensory system > Flashcards

sensory system Flashcards

1
Q

What are the functions of the skin?

A

To be a protective layer
Excrete water
Regulate body temperature (sweat)
Is a sensory organ

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are the 3 layers of skin?

A

Epidermis ( outer skin layer)
Dermis (middle skin layer)
Subcutaneous/ Hypodermis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Define the Subcutaneous/ Hypodermis skin layer

A

made of connective and adipose tissue and attaches dermis to underlying muscle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Define the dermis skin layer

A

Middle layer of skin

most vascular and nervous layer

connective tissues of collagen strength for elastic and flexibility

Contains hair follicles and sweat glands

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Define the epidermis skin layer

A

outer layer of skin which is composed of layers of epithelial cells

top layer is stratum corneum (visible dead cells)
inner layer is stratum germinativum ( where live cells are generated)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Describe the Sudoriferous gland

A

located in the dermis

coiled gland that secrete sweating ducts of the skin pours

excrete 600cc per day

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Describe the sebaceous gland

A

located in the dermis

secrete oil (sebum) into hair follicles to lubricate the skin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Describe tactile sensations

A

Nerve endings respond to different sensations

Krause (cold)
Ruffini ( heat)
Merkel (light touch)
Pacini (pressure)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Melanin is…

A

the chief pigment produced by stratum germinativum of the epidermis

creates darkness of hair and skin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Carotene is…

A

a minor pigment produced in the epidermis

provides a yellowish orange color which gives the skin and hair light tones

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Keratin is…..

A

not a pigment
but a protein for hair and nails
‘water-proofs” the skin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What are the 3 parts of the ear

A

The external ear
Middle ear
Internal ear

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What structures are in the external ear

A

Auricle or pinna ( top of ear)

Tragus (ear flap)

EAM (external auditory meatus)

EAC (external auditory canal)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What structures are in the middle ear

A

tympanic membrane ( eardrum )

Tympanic Cavity ( houses the ossicles )

Eustachian tube (duct that connects ear to throat)

Auditory ossicles ( malleus, incus, stapes)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are the structures ion the internal ear

A

contains structures of hearing and balance

membranous labyrinth ( actual organs of hearing and balance)

vestibule ( connects the cochlea, semi circular canals and ossicles)

Oval window ( receives vibrations from stapes)

Round window (ends closed system)

Cochlea (snail portion that converts sound waves)

Semi circular canals (posterior, lateral, superior/ organs of equilibrium)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Define the conjunctiva

A

thin, transparent outer covering of the eye and inner eyelid for protection (can be flipped inside out)

17
Q

Define the sclera

A

White portion of eyeball

18
Q

Define the cornea

A

Transparent continuation of sclera over pupil

19
Q

Define the pupil

A

Opening into eyeball for light transmission

20
Q

Define the iris

A

Muscle which controls the pupil size depending on amount of available light

21
Q

Define the lens

A

Transparent , refractive tissue being the pupil which inverts and focuses the light toward the back of the eye

22
Q

Define the choroid

A

vascular layer between sclera and retina

23
Q

Define aqueous humor

A

Fluid surrounding the pupil and iris

24
Q

Define vitreous humor

A

Jelly like fluid filling the eyeball proper posterior to lens

25
Q

Define the retina

A

inner layer of eyeball

26
Q

define fovea centralis

A

back of the eye in a direct line from the lens

27
Q

Define optic disc

A

“blind spot” where the optic nerve attaches to back of the eye

28
Q

Define photosensitive cells

A

are located in the fovea centralis and responds to light

29
Q

What are the 2 types of photosensitive cells

A

Cones and rods

30
Q

Define cones

A

Used for daylight (photopic) vision
perception of color
less sensitive to light

31
Q

Define Rods

A

Used for night (scotopic) vision
bland and white perception
more sensitive to light

32
Q

How many muscles attach to the eye

A

6 and only 1 muscle controls the eyelid

A & P: 2 (17 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions