Chapter 5 Integumentary System

Question 1

What is the superficial thinner potion composed of epithelial tissue?

Answer 1

Epidermis

Question 2

What is he deeper, thicker connective tissue called?

Answer 2

Dermis

Question 3

What is deep to the dermis, but not apart of the skin?

Answer 3

Subcutaneous layer

Question 4

What is another name for hypodermis?

Answer 4

Subcutaneous

Question 5

What layer consists of areolar and adipose tissues?

Answer 5

Subcutaneous layer

Also called the hypodermis

Question 6

Which layer of skin serves as storage depot for fat and contains large blood vessels that supply the skin?

Answer 6

Subcutaneous layer

Question 7

Which layer contains encapsulated nerve endings called lamellated (pacinian) corpuscles that are sensitive to pressure?

Answer 7

The subcutaneous layer

And sometimes the dermis

Question 8

What layer is composed of keratinized stratified squamous epithelium?

Answer 8

Epidermis

Question 9

What contains four principle types of cells: keratinocytes, melanocytes, langerhans cells, and merkel cells?

Answer 9

Epidermis

Question 10

What epidermal cells are about 90%?

Answer 10

Kerotineocytes

Question 11

What cells are arranged in four to five layers and produce the protein keratin?

Answer 11

Keratinocytes

Question 12

Keratinocytes produce these, which release a water-repellent sealant that decreases water entry an loss and inhibits the entryoff foreign materials

Answer 12

Lamellar granules

Question 13

What epidermal cells are about 8%?

Answer 13

Melanocytes

Question 14

This epidermal cell develops from the ectoderm of a developing embryo an produce the pigment melanin

Answer 14

Melanocytes

Question 15

Which cell arise from red bone marrow and migrate to the epidermis?

Answer 15

Langerhans cells

Question 16

Which cell are the least numerous of the epidermal cells?

Answer 16

Merkel cells

Question 17

What cell is located in the deepest layer of the epidermis?

Answer 17

Merkel cells

Question 18

What cell detects touch sensation?

Answer 18

Merkel cell

Question 19

What is the name of the disc that detects touch sensations?

Answer 19

Tactile disc

Question 20

Which layer of the epidermis consist of 25 to 30 layers of flattened dead keratinocytes?

Answer 20

Stratum corneum

Question 21

What is apoptosis?

Answer 21

Cell suicide

Question 22

How long does keratinization take?

Answer 22

About 4 weeks

Question 23

What do you call the process where cells move from one of the epidermal layers to the next, they accumulate more and more keratin?

Answer 23

Keratinization

Question 24

Where are the two regions the dermis can be divided into?

Answer 24

Papillary region

Reticular region

Question 25

What are the three pigments that impart a wide variety of colors to skin?

Answer 25

Melanin, hemoglobin, and carotene

Question 26

If the amount of melanocytes is about the same in all people then why do people have different skin tones?

Answer 26

Skin color are due mainly to the amount of pigment the melanocytes produce and transfer to keratinocytes

Question 27

What do you get when A local sized overgrowth of melanocytes happen?

Answer 27

Nevus (mole)

Question 28

What is it called when an individual cannot produce melanin?

Answer 28

Albinism

Question 29

What is present on most skin services except the palms, palmar surfaces of the fingers, the soles, and plantar services of the feet?

Answer 29

Hairs

Question 30

What generates nerve impulses if the hair shaft is moved?

Answer 30

Hair root plexus

Question 31

What is it called when someone has partial or complete lack of hair?

Answer 31

Alopecia

Question 32

What is her become gray?

Answer 32

Because of a progressive decline in melanin in production