Chapter 22 Flashcards
Bone protect our
Organs
The skeletal system is made of
Bone, cartilage, ligaments
Our spinal cord is protected by
Vertebra
What protects our heart and lungs
Ribs
What protects our brain
Skull
Bones store
Phosphorous, calcium, and fats
Bones move by
Using muscles to pull on the bones
Red marrow is
Red and white blood cells
Yellow marrow is
Fats
Cells that make minerals in bones are
Osteoblasts
Dense, rigid outer part of bone
Compact bone
Light weight less dense supportive inside bone
Spongy bone
Bones are held together by
Ligaments
The area where two bones meet and allow movement is
The joint
How. Any joints are in the human body
Six
Hinge joint
Moves at a 90* angle back and forth
Gliding joint
Allows bones to slide over each other
Pivot joint
At the base of neck
Ball and socket joint
Moves in all directions
Fixed joint
Does not allow movement, fuzes together
Disease that makes loss of calcium
Osteoporosis
Fracture, splint
Breaks
Ligament is stretched too far
Sprains
Joints are swollen
Arthritis
Joint pop out of place
Dislocation
Epithelial tissue does what
Covers and protects
Nervous system does what
Send electrical impulses throughout body with nerves and neurons
Muscle tissue is made of
Cells that contract and relax to produce movement
The connective tissue does what
Joins, supports, protects insulates, nourishes, cushions, and keeps organs from falling apart
Skeletal muscles are
Striated Attached to bones Voluntary Reacts quickly but tires quickly Contains flexers and extenders Work in pairs
Smooth muscle
Appears smooth Found in internal organs Involuntary Reacts and tires slowly Moves in wave like contractions
Cardiac muscle is
Striated Found only in the heart Involuntary Never tires Moves in rhythmic contractions
Integumentary system does what
Covers body
Which system helps maintain homeostasis?
Integumentary
Integumentary system functions:
Keeps water in your body and foreign particles out
Nerve endings in skin let you feel
Sweat glands remove waste and regulate temperature
Melanin
Produces skin color
Melanin protects us from
Ultra-violent light
The epidermis is
Outermost layer of skin
Made of epithalamion tissue
Thicker in hands and feet
Most cells on epidermis are dead
Dermis is
Below epidermis
Has protein fibers called collagen
Has blood vessels, nerves, hair follicles, muscle fibers (goose bumps), oil glands, sweat glands
Hair is
Alive in the follicle
Colored by melanin
Protects from ultra violent light
Helps regulate temperature
Nails
Grow from the nail bed
Protect toes and fingers
Allows more sensitiveness
Cuts
Blood clots stop the bleeding
White blood cells work around the infection
Cells around the cut undergo mitosis to make new cells
Damage to genetic material can cause
Skin cancer
Too much oil can cause____________if combined with_______________.
Acne
Dead skin cells, bacteria
