Ch 6: Skin (Integumentary System)

Which are true about the integumentary system?

• Temp regulation, Excretes small quantity of waste
• Slows loss of water
• Contains sensory receptors
• All choices are correct

Outer layer of skin made of stratified squamous epithelium

• Dermis 
• Epidermis 
• Connective tissue 
• Epithelial tissue

Connective tissue containing collagen & elastic fibers, epithelial tissue, smooth muscle tissue, nervous tissue, blood; relatively thick.

• Dermis 
• Epidermis
• Hypothalamus
• Fibrocytes

Under the dermis; not technically part of skin; loose connective and adipose (fat) tissue

• Hyerdermis
• Dermis
• Epidermis
• Subcutaneous layer 

Lacks blood vessels; older cells undergo keratinization; thickness varies, has 4 layers

• Dermis
• Epidermis
• Keratin
• Melanin

Skin color is due mostly to amount of melanin produced by melanocytes. 

• True
• False

Tags

NGSS.MS-LS1-5

Skin color can be influenced by genetic factors, but environmental factors such as tanning, vitamin deficiencies, and blood flow are the most important factors. 

• True
• False
• It is unknown

Binds epidermis to underlying tissues; has blood vessels that supply nutrients to upper skin cells

• dermis
• epidermis
• thyroid
• follicles

Contains hair follicles, sebaceous and sweat glands

• epidermis
• dermis
• hypodermis
• none of the above

The darker region running horizontally near the top of the photo is part of the: 

• dermis
• epidermis
• subcutaneous layer
• none of the above

Tags

NGSS.HS-LS1-2