Integumentary System

Question 1

What are the functions of the integumentary system?

Answer 1

• Protection
• Containment
• Heat Regulation
• Sensation
• Synthesis & storage of vitamin D

Question 2

What is the basic structure of the integumentary system?

Answer 2

1. Epidermis

2. Dermis

Question 3

Epidermis

Answer 3

• Tough outer protective layer
• Avascular
  - Nourished by the
  underlying Dermis

Question 4

Dermis

Answer 4

• Vascular

Contains:

• Dense layers of Collagen and Elastic Fibers
• Nerve receptors
• Hair follicles
• Sebaceous glands

Question 5

Superficial Fascia

Answer 5

• Contains sweat glands, fat, nerves & vasculature

Question 6

What wraps all of the body’s deep structures?

Answer 6

Fascia

Question 7

What are the two layers of superficial fascia?

Answer 7

1. Outer fatty layer

2. Inner membranous layer

Question 8

Deep Fascia

Answer 8

Dense connective tissue

• Surrounds muscles & neuromuscular bundles
• Muscles can attach here
• Blends with CT (connective tissue) covering of bones (Periosteum)
• Aides in vascular return

Question 9

Fascia Compartments

Answer 9

CT ‘bags’ that divide muscle groups

• Separated by Intermuscular Septa
• Can contain or allow spread of infection, tumors & swelling

Question 10

Reinacula

Answer 10

• Found near joints
• Hold tendons in place
• Prevent ‘bowstringing’

Question 11

What is a bursae?

Answer 11

Fascia sacs that reduce friction

Question 12

Bursae

Answer 12

• Normally collapsed
• Can communicate with joints & contain synovial fluid
• Very important clinically

** Difficult to see in lab **

Question 13

What are the types of Bursae?

Answer 13

• Subcutaneous
• Subfascial
• Subtendinous
• Synovial tendon sheaths

Question 14

What are collapsed bursae sacs and what is their function?

Answer 14

Double layer of serous membranes and form sacs that surround organs.

** Organs are surrounded but not completely inside the sacs**

Question 15

What are serous membranes?

Answer 15

A membrane that produces a serous (lubricating) fluid.

Question 16

What is the bursal sac around the lungs called?

Answer 16

Pleura

Question 17

What is the bursal sac around the abdominal viscera called?

Answer 17

Peritoneum

Question 18

What is the bursal sac of the heart called?

Answer 18

Pericardium

Question 19

What are the layers of a bursal sac?

Answer 19

1. Visceral layer
   
   • On surface of organ, not detachable, would ruin the organ tissues if we tried to detach
2. Parietal layer

** Fascia layers allow for movement and expansion and function normally **

Question 20

What is under the parietal peritoneum layer?

Answer 20

Subserous fascia