Skin 1
What are the 3 layers of skin?
Epidermis, Dermis and fatty layer
What is the largest organ in the body?
Skin
What are the 3 types of muscles?
cardiac, skeletal, and smooth
What is an involuntary muscle? What is a voluntary muscle?
Involuntary: can't control
Voluntary: can control
What is a ligament?
tough bands of connective tissue, that connect bones to bones
What is the epidermis?
the outer most layer of the skin
How many skin functions are there?
5 skin functions
Which muscle is involuntary? Which is voluntary?
Involuntary: cardiac, smooth
Voluntary: skeletal
What are striations? Which muscles are they found in?
lines/stripes in the muscle--found in cardiac and skeletal muscle
What are the 2 types of joints?
immovable and movable
Located below the epidermis, contains blood vessels, nerves, muscles and oil/sweat glands
What are the 5 skin functions? (Name them)
Sweat glands, protection, sensory response, vitamin D protection, body temperature control
Where is cardiac muscle found? Tell me 2 facts about it
Found in the heart, reacts quickly, doesn't get tired
What is the job of cartilage?
protects joints, provides cushion (reduces friction)
How many movable joints are there?
4
What is the fatty layer?
helps maintain the body's temperature, and provides cushion
What is the job of sweat glands?
controls body temperature, and gets rid of waste
What is a skeletal muscle?
muscles that are attached to bones by tendons
Tell me about 1 movable joint and give an example.
hinge: least range of motion; Ex: elbow and knee
ball and socket: wide range of motion; Ex: shoulder and hip
pivot: rotational; Ex: turning your head
gliding: bones slides over each other; Ex: wrists, ankles, vertebrae
What are the 4 movable joints? (Name them)
hinge joint
ball and socket joint
pivot joint
gliding joint
What is another name for the fatty layer?
Subcutaneous fatty layer
Why is vitamin D production so imporant?
helps our body absorb calcium
What is a tendon?
thick bands of tissues attach bones to muscles
What are 3 important parts of the bone?
cartilage, spongy bone, and marrow
What are the 5 functions of bones?
Shape and support
protect internal organs
attached to muscles and helps them move
blood cell production (in the marrow)
calcium and phosphorus storage