INTEGUMENTARY SYSTEM

INTEGUMENTARY SYSTEM

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Multiple Choice

All skin is dead

• true

• false

Multiple Choice

Our bodies maintain an internal temperature of ...

• 98.1

• 95.00

• 98.6

• 99.7

INTEGUMENTARY SYSTEM includes our hair skin and nails

Our skin serves as a protective coating and helps maintain homeostasis (balance)

• it's our bodies LARGEST organ

• has 2 distinct layers (Epidermis and Dermis)

EPIDERMIS- outer/top layer of skin

• there are not blood vessels or nerve ending here

• newly formed cells move up through the epidermis

• on their way up they get filled with Keratin (protein) and die

• dead cells are eventually shed and replaced with other cells

DERMIS- lower layer of skin (underneath the epidermis)

• contains blood vessels, nerve endings, hair follicles, and glands

• sebaceous glands produce and oil called SEBUM (Waterproofs the skin) also helps prevent microbial growth

• sweat glands help in regulating body temp and remove excess water, salt, and waste

• 
  

Multiple Choice

Which is the outer layer of the skin

• Dermis

• Epidermis

Multiple Choice

Does the outer layer of skin contain blood vessels and nerve endings?

• yes

• no

COMMON SKIN PROBLEMS

• Acne- bacterial infection, mostly cause my excess sebum clogging hair follicles

• Skin Cancer- uncontrollable skin growth, usually caused by UV exposure (wear protective clothing and sunscreen)

Multiple Choice

the best way to prevent _______ is to avoid UV exposure by using sunscreen and wearing protective clothing

• Vitamin D deficiency

• skin cancer

• vitiligo

• rheumatism

NAILS- are keratin filled cells (hard)

• protect finger tips

• enhance sensation (feeling)

• cells get added to the nail bed pushing older cells forward (nail growth)

• There are no nerve endings in the nail

HAIR- dead keratin filled cells that overlap like shingles to shed water

• Helps insulate and protect

• Head hair prevents heat loss,

• eyelashes protect eyes from dirt and water

• Hairs in your nose trap dust from entering your lungs

Multiple Choice

Does the integumentary system have a roll in the homeostasis

• no, it's mostly an outer barrier

• no, they play no major roll

• no, it's just skin hair and nails

• yes, like all other body systems

Multiple Select

Hair helps do what for the body (check all that apply)

• insulate

• form protective plates

• provide sensory input

• trap particles of air

• regulate breathing

Multiple Choice

what's the difference in hair and nails?

• hair contains Keratin

• nails have nerve endings

• hair insulates the body

REVIEW OF SKELETAL AND MUSCULAR SYSTEMS

Multiple Choice

Mature bone cells are called..

• osteoblast

• osteocytes

• osteoclast

Multiple Choice

Where is blood produced in the human body?

• epidermis

• bone marrow

• lungs

• heart

Multiple Choice

We have _____ bones and _____ muslces

• 100, 1000

• 202, 308

• 206, 600

• 176, 290

Multiple Choice

_________ system tells muscles to move

• muscular

• skeletal

• nerveous

• integumentary

Multiple Choice

On average how many times does your heart be a minute

• 55

• 65

• 75

• 85

Multiple Choice

muscles _______ and _____ to produce movement.

• make blood and cartilage

• contract and relax

• twist and turn

• divide and grow