Chapter 6: Integumentary System

Question 1

A delicate cell membrane (invertebrate integument)

Answer 1

Protozoans

Question 2

Invertebrate integument in the form of a single layer of cells

Answer 2

Coelenterates, flat worms and slugs

Question 3

Invertebrate integument - the epidermis secretes a protective skeleton or shell

Answer 3

Insects, snails and crustaceans

Question 4

Invertebrate integument consists of a single layer of epidermis which secretes a complex cuticle

Answer 4

Arthropods

Question 5

Functions of vertebrate integuments

Answer 5

Protects
Maintain constant internal environment
Regulates elimination of heat
Sense organ
Covering

Question 6

Outer, thinner layer of the skin

Answer 6

Epidermis (scarf)

Question 7

Inner, thicker layer of the skin

Answer 7

Dermis (corium or cutis vera)

Question 8

What kind of epithelium is the epidermis composed of?

Answer 8

Stratified squamous keratinized epithelium

Question 9

Layers of the epidermis

Answer 9

Stratum corneum
Stratum lucidum
Stratum granulosum
Stratum germinativum

Question 10

Outer layer pf the epidermis. Cells in this layer are continually shed off by molting.

Answer 10

Stratum corneum

Question 11

Only present in the very thickened surfaces of the skin like the soles and palms

Answer 11

Stratum lucidum

Question 12

The middle layer where the epithelial cells die and become keratinized

Answer 12

Stratum granulosum

Question 13

Adjacent to the dermis and contains epidermal cells that undergo frequent cell division that gives rise to cells in the preceding layers

Answer 13

Stratum germinativum

Question 14

Composed largely of connective tissues and is made up of 2 layers

Answer 14

Dermis

Question 15

Layers of the dermis

Answer 15

Stratum spongiosum

Stratum compactum

Question 16

Borders the epidermis. Made up of loose connective tissues, glands and chromatophores or pigment cells

Answer 16

Stratum spongiosum

Question 17

Made up of more compact connective tissues, nerves, blood vessels, and tactile corpuscles

Answer 17

Stratum compactum

Question 18

Different nerve endings found in the dermis

Answer 18

Pacinian corpuscles
Krause’s end bulb
End bulbs of Ruffini
Free nerve endings

Question 19

SNE for pressure

Answer 19

Pacinian corpuscles

Question 20

SNE for cold sensation

Answer 20

Krause’s end bulb

Question 21

SNE for heat sensation

Answer 21

End bulbs of Ruffini

Question 22

SNE for pain sensation

Answer 22

Free nerve endings

Question 23

Consists of the skin and its derivatives, the hair and nails. Major function is to protect the internal body parts.

Answer 23

Integumentary system