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Anatomy & Physiology Of The Hair And Skim > Anatomy > Flashcards

Anatomy Flashcards

1
Q

Prickle cell layer because of the cells prickly shape
Living cells containing a nucleus

A

Stratum spinosum

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2
Q

The layer in which mitosis takes place, melanocytes are located in this stratum

A

Stratum germinativum

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3
Q

Ultraviolet rays from sunlight reacts with the amino acids tyrosine found in the melanocytes and produce melanin

A

Stratum germinativum

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4
Q

This layer is only a single cell layer above the stratum germinativum
The stratum___ combined with the stratum germinativum is known as the malpighian layer

A

Stratum mucosum

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5
Q

This layer gets its name from the transparent nature of the cells that contain eleidin, a clear substance

A

Stratum lucidum

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6
Q

Also known as the granular layer, lies at the bottom of the horny zone
The lower cells have nuclei and are still living

A

St. Granulosum

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7
Q

The outer most layer where skin cells constantly shed

A

St. Corneum

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8
Q

Often called the living layer or “true skin”
Also divided into 2 layers called the papillary layer and reticular layer

A

The dermis

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9
Q

Lies directly below the epidermis and is made of elastic collegenous
This layer also forms the connective tissue sheath around hair follicle

A

The papillary layer

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10
Q

The thickest layer of the skin, this layer is composed of dense bundles of collagen fibers

A

The reticular layer

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11
Q

Appendages of the reticular layer

A

Arrector pili muscle
Blood vessels
Fat cells
Hair follicle
Lymph vessels
Nerve ending
Sebaceous glands
Sudoriferous glads

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12
Q

This sweat glands is under the control of the sympathetic nervous system
Found deep in the dermis & have tubular ducts extending all the way up to the pores of the epidermis

A

Sudoriferous glands

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13
Q

This glad is found in the genitalia area & in axillae usually open into hair follicles
This gland is also believed to excrete pheromones

A

Apocrine gland

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14
Q

This gland is found all over the body

A

Eccrine glands

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15
Q

This gland is found all over the skin, secretes sebum,found in greater numbers on the scalp,T-zone

A

Sebaceous glands

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16
Q

Carry’s impulses to the brain
Meissner corpuscles are responsible for touch

A

Nerve ending

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17
Q

Also called the pilosebaceous unit

A

Hair

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18
Q

At the base of the dermis is a layer of fatty tissue ___ layer, subcutis or adipose layer

A

The subcutaneous layer

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19
Q

The outer root sheath of the canal is formed from what?

A

The basal cell layer

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20
Q

The inner side of the follicle canal, which is made of horny epidermal tissue is called

A

The external root sheath

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21
Q

The base of the follicular canal widens to the____

A

Hair follicle bulb

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22
Q

The area where the hair grows contains the dividing cells of the hair matrix the produces the hair and the protective external and inner root sheath

A

The bulb

23
Q

The____ contains the blood supply needed for providing nutrients for growth as well as the hormones that stimulate hair growth

A

Papillae/ papilla

24
Q

This gland lubricates the hair, preventing it from breaking also prevents epidermis from drying and prevents bacteria and germs from interning the skin

A

Sebaceous glands

25
Q

3 layers of the hair

A
  1. Cuticle
  2. Cortex
    3.medulla
26
Q

Outer most of the hair layer
Composed of transparent cells that overlaps like scales
Protects the inner layers of hair

A

The Cuticle

27
Q

The middle layer, Gives hair its strength and elasticity

A

The cortex

28
Q

The inner most of the hair
Also called the pith or marrow

A

The medulla

29
Q

3 types of hair

A

1.lanugo
2.vellus
3.terminal

30
Q

Soft downy hair also called fetal hair
Often sheds a few weeks after birth

A

Lanugo

31
Q

Often confused with lanugo
Present thru adulthood, fine & short often called “peach fuzz”
Women are believed to have 55% more then men

A

Vellus

32
Q

Longer coarser pigmented hair
Found in groins and axillae

A

Terminal.

33
Q

3 stages of hair grown

A

1.growing (anagen)
2. Transitional (Catagen)
3.resting (telogen)

34
Q

The hair follicle is at its deepest
The Hair matrix is active

A

Anagaen -the growing phase

35
Q

The hair follicle separates from the dermal papilla ,the follicle shrinks to about a third of its anagen size
The shortest hair growth phase lasting only a few days up to a few weeks

A

Catagen- the transitional phase

36
Q

The follicle is one third it’s original anagen size, the base of the hair looks like a club( club hair)

A

Telogen- the resting phase

37
Q

The functions of the skin
The body’s largest sensory organs

A

Protection
Heat regulation
Excretion
Secretion
Absorption
Sensation
Synthesis of vitamin D

38
Q

Unites of structure in protein that helps break down simple sugar and fats

A

Amino acids

39
Q

Hair that has lost its root structure and that ,when sheds from the follicle exhibits round shape

A

Club hair

40
Q

Fibrous tissue that binds protects cushions and supports the various parts of the body

A

Connective tissue

41
Q

The act of exfoliating dead skin cells

A

Desquamation

42
Q

The process of widening or expanding

A

Dilation

43
Q

Clear lifeless matter deposited in the form of minutes keratohyalin granules in the protoplasm’s of living cells

A

Eleidin

44
Q

The tissue that forms a thin protective layer on bodily surfaces

A

Epithelial tissue

45
Q

The depression in the skin that houses the entire pilosebaceous unit

A

Follicular canal

46
Q

The skin and it’s necessary organs such as the sebaceous and sweat glands, sensory receptors,hair and nails

A

Integumentary system

47
Q

A skin layer made of the st. Mucosum and the st. Germaniativum

A

Malpighian

48
Q

Called found in the epidermis that warms against the invasion of microorganisms and responds to that invasion

A

Langerhans cells

49
Q

The most superficial layer of the dermis

A

Papillary layer

50
Q

A deep layer of the dermis so posed of dense bundles of collagen fibers contains vessels glands nerve ending and follicles

A

Reticular layer

51
Q

Layers of tissue that lack blood vessel acts as a surface barrier

A

Stratified epithelium

52
Q

An amino acid present in melanocytes

A

Tyrosine

53
Q

Over growth of tissue ,increase in number of cells

A

OMA

Anatomy & Physiology Of The Hair And Skim (3 decks)

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