integumentary system

Question 1

integumentary system fx

Answer 1

• protects your body against infection, barrier.
• sensation
• blood storage
• temperature regulation
• vitamin D synthesis
• excretion

Question 2

layers of the skin:

Answer 2

• EPIDERMIS (avascular)
• DERMIS

Question 3

• top layer, stratified squamous epithelium tissue
• made up of keratinocytes, gives structure, durability, and water proofing.
• constantly dying and replaced

Answer 3

• EPIDERMIS (avascular)

Question 4

synthesizes melanin, giving skin color, cellular extensions makes up the amount of melanin.

Answer 4

melanocyte

Question 5

ingesting unwanted invaders, originates in the bone marrow

Answer 5

dendritic/langerhan cells

Question 6

combine with nerve endings to create a sensory receptor for touch

Answer 6

• tactile/merkel cells

Question 7

• thick skin has __ layers, while thin skin has ___ thick skin layers

Answer 7

5
3

Question 8

5 layers of thick skin

Answer 8

1. stratum corneum
2. stratum lucidum
3. stratum granulosum
4. stratum spinosum
5. stratum basale

Question 9

• horny cell layer, squames sheds off

Answer 9

. stratum corneum

Question 10

• not in thin skin

Answer 10

stratum lucidum

Question 11

• contains living keratinocytes

Answer 11

. stratum granulosum

Question 12

• mitosis is active, tonofibrils

Answer 12

stratum spinosum

Question 13

• new cell production factory, connects to the dermis

Answer 13

. stratum basale

Question 14

• sweating, circulating blood, and sense of touch.
• has a lot of collagen and elastins
• has lots of capillaries and blood vessels

Answer 14

• DERMIS

Question 15

dermis layers:

Answer 15

1. papillary layer
2. reticular layer

Question 16

• areolar connective tissue, friction ridges forms fingerprints.

Answer 16

1. papillary layer

Question 17

• dense irregular connective tissue

Answer 17

2. reticular layer

Question 18

• adipose connective tissue
• where body fat stays cutaneous sensory receptors/corpuscles
• receive stimuli from the outside environment

Answer 18

SUBCUTIS/HYPODERMIS

Question 19

types of corpuscles:

Answer 19

1. pacinian corpuscles
2. meissners corpuscles
3. ruffinis corpuscle

Question 19

parts of a hair follicle:

Answer 19

1. shaft
2. root

Question 20

makes up the integumentary system

Answer 20

hair, nails, sweat, oil glands, and skin

Question 21

corpuscle for touch

Answer 21

pacinian corpuscles

Question 22

corpuscle for pressure

Answer 22

meissners corpuscle

Question 23

corpuscle for stretch or torque

Answer 23

ruffinis corpuscle

Question 24

associated with a har follicle

Answer 24

arrector pili muscle

Question 25

each hair root is enclosed by to epithelial sheaths, _______ and ________ root sheaths

Answer 25

external internal

Question 26

in actively growing hair, the hair follicle has an expanded, bulbous proximal portion called

Answer 26

hair bulb

Question 27

the base of the hair bulb has a deep concavity that is occupied by a _____________________, which consists of connective tissue that supply the hair follicle with nutrient and oxygen are embedded.

Answer 27

hair papilla

Question 28

mature hair has three distinct histologic layers :

Answer 28

medulla, cortex, cuticle

Question 29

absent in thin hair, occupies the core of the hair. it is formed by the cells of the hair matrix that immediately surround the apex of the dermal papilla.

Answer 29

medulla

Question 30

surrounds the medulla and is the thickest of the concentric layers of hair. it is formed by the cells in the hair matrix that externally surround the medulla-producing cells.

Answer 30

cortex

Question 31

cortex also produce numerous __________ granules that contain an insoluble protein, __________.

Answer 31

trichohyalin