Chapter 6

Question 0

Differentiate between the four types of membranes

Answer 0

Serous-lines body cavities that lack openings to outside and secrete watery serous fluid that lubricates membrane surface
Mucous-line body cavities that open to outside and secretes mucus
Synovial-lines joint cavities and secretes thick synovial fluid that lubricates joints
Cutaneous-external body covering(skin)

Question 1

Name the four types of membrane

Answer 1

Serous, mucous, synovial, cutaneous

Question 2

What is the function of skin and it’s tissues

Answer 2

Protection, regulate temp, slows water loss, houses various sensory receptors, makes chemicals, and excretes waste

Question 3

T or f there is no blood in the first four layers

Answer 3

True

Question 4

Lacks blood vessels

Answer 4

Epidermis

Question 5

Deepest layer (stratum basal (germination))

Answer 5

Epidermis

Question 6

Only layer alive

Answer 6

Layer four

Question 7

What layer can divide and make new skin

Answer 7

Layer 4

Question 8

Nourished by dermal blood vessels

Answer 8

Epidermis

Question 9

Only this deepest layer can divide

Answer 9

Epidermis

Question 10

Older cells harden

Answer 10

Keratinization

Question 11

Stratum corneum

Answer 11

Epidermis

Question 12

Outermost layer of dead cells

Answer 12

Stratum corneum

Question 13

Protects underlying tissue against water loss, injury and effects of harmful chemicals

Answer 13

Epidermis

Question 14

Pigment in skin which absorbs uv radiation

Answer 14

Melanin

Question 15

Pigment cells

Answer 15

Melanocytes

Question 16

Where do the differences in skin color come from?

Answer 16

Result from the amount of melanin, distribution and size of pigment granules, environment, physiological factors, genetics

Question 17

What does ABCD in reference to pigmented skin stand for

Answer 17

Pigmented areas are assymetric, have irregular boarders, have several colors, and have a diameter greater than 6mm. are likely to be cancer

Question 18

Binds the epidermis to underlying tissue

Answer 18

Dermis

Question 19

Dermal blood vessels supply nutrients to skin cells and aid in regular body temp

Answer 19

Dermis

Question 20

Nerve fibers are scattered throughout

Answer 20

Dermis

Question 21

Contains hair follicles, sebaceous glands(oil), and sweat glands

Answer 21

Dermis

Question 22

Beneath dermis and consists of loose connective tissue and adipose

Answer 22

Subcutaneous

Question 23

Adipose conserves heat

Answer 23

Subcutaneous

Question 24

Contains major blood vessels that supply skin and adipose

Answer 24

Subcutaneous

Question 25

Tubelike depression in skin in which hair develops

Answer 25

Hair follicles

Question 26

Bundle of smooth muscle attached to each follicle. When stimulates puckers, causing goose bumps

Answer 26

Arrector pili muscle

Question 27

Oily mixture that helps keep skin and hair soft and waterproof

Answer 27

Sebum

Question 28

Not on our hands and feet.... Which explains why we get dry skin

Answer 28

Oil glands

Question 29

Whitish half moon shaped region at base of nail plate is most active growing region

Answer 29

Lunula

Question 30

What is in sweat

Answer 30

Sweat is mostly water, also contains salt and waste (liquid)

Question 31

What is the difference between eccrine and apocrine glands

Answer 31

Eccrine- respond to elevated temp (hands and feet) | Apocrine-respond to emotional stress (hair follicles)

Question 32

Explain how body temp regulated when hot/cold

Answer 32

Temp rises-dermal blood vessel dilate and sweat glands release sweat Temp drops- dermal blood vessels constrict and sweat glands become inactive Excessive heat loss stimulates skeletal muscles to contract involuntary

Question 33

Explain healing of shallow and deeper

Answer 33

Dividing epithelial cells fill in shallow cuts in epidermis | Blood clots form a scab to cover deeper tissue

Question 34

Branch of blood vessels and cluster of fibroblasts form in large open wounds

Answer 34

Granulations

Question 35

Explain 3 degrees and symptoms

Answer 35

1- only involves surface layers of epidermis; skin is red and tender-not painful 2-much of epidermis is destroyed and also extends into dermis; redness and blisters p-painful because dermis nerves are irritated 3- involves all skin layers-charring of skin; intensive pain because of nerve destruction

Question 36

Why is inflammation good for wound healing

Answer 36

Dilated blood vessels provide for nutrients and oxygen and helps it heal