Integumentary System

Part A

Match the structures in column A with the description and functions in column B. Place the letter of your choice in the space provided.

Column A Column B

an oily secretion that helps to waterproof body surface outermost layer of epidermis become active at puberty epidermal pigment inner layer of skin responds to elevated body temperature pigment-producing cell general name of entire superficial layer of the skin gland that secretes an oily substance hard protein of nails and hair binds skin to underlying organs cell division and deepest layer of epidermis tubelike part that contains the root of the hair causes hair to stand on end and goose bumps to appear

a.

apocrine sweat gland

_ 1.

b.

arrector pili muscle

2

c.

dermis

d.

eccrine sweat gland

_ 3.

e.

epidermis

_ 4.

f.

hair follicle

g.

keratin

_ 5.

h.

melanin

6

i.

melanocyte

j.

sebaceous gland

_ 7.

k.

sebum

8

l.

stratum basale

m.

stratum corneum

_ 9.

n.

subcutaneous layer

_ 10.

_ 11.

_ 12.

_ 13.

Complete the following: 1. How does the skin of your palm differ from that on the back (posterior) of your hand?

2. Describe the differences you observed in the type and distribution of hair on the front (anterior) and back (posterior) of your forearm. _

3. Explain how a hair is formed. _

4. What cells produce the pigment in hair? _

Part C

Complete the following: 1. Distinguish among epidermis, dermis, and subcutaneous layer.

2. How do the cells of stratum corneum and stratum basale differ?

3. State the specific location of melanin observed in heavily pigmented skin.

4. What special qualities does the connective tissue of the dermis have?

Part D

Complete the following:

1. What part of the hair extends from the hair papilla to the body surface?

2. In which layer of skin are sebaceous glands found? _

3. How are sebaceous glands associated with hair follicles?

4. In which layer of skin are sweat glands usually located?

Part E

Sketch and label a vertical section of human skin using the scanning objective.

Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

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