Ch. 45

Question 0

Four types of human tissue

Answer 0

Muscle
Nervous
Epithelial
Connective

Question 1

Four body cavities

Answer 1

Cranial
Spinal
Thoracic- above diaphragm
Abdominal- below diaphragm

Question 2

Appendicular skeleton

Answer 2

Arms
Legs
Scapula
Clavicle
Pelvis

Question 3

Function of bones

Answer 3

Support
Movement
Protection 
Mineral storage
Production of blood cells

Question 4

Osteoporosis

Answer 4

Loss of bone minerals- become brittle and weak

Question 5

Ligaments

Answer 5

Tough connective tissue

Hold bones together

Question 6

Tendons

Answer 6

Attach muscle to bone

Origin/insertion

Question 8

Three muscle types

Answer 8

Smooth
Cardiac
Skeletal

Question 9

Smooth muscle

Answer 9

Involuntary
Stomach wall
Blood vessels

Question 10

Cardiac muscle

Answer 10

Involuntary

Heart walls

Question 11

Joints- types+ examples

Answer 11

Places where bones meet
Fixed- skull
Semi movable-vertebrae
Movable- hips, arms etc

Question 12

How muscles contract

Answer 12

Myosin “heads” pull the actin in
Muscle shortens
Requires ATP to detach myosin from actin

Question 13

Skeletal muscle

Answer 13

Voluntary

Moves bones

Question 14

Ossification

Answer 14

Cartilage becomes hard due to mineral deposits

3rd fetal month

Question 15

Bone growth

Answer 15

Takes place at epiphyseal plates (bone ends)

Question 16

Compact bone

Answer 16

Provides strength

Blood vessels running through ja version canals

Question 17

Periosteum

Answer 17

Thick membrane

Contains blood vessels and nerves

Question 18

Axial skeleton

Answer 18

Skull
Ribs
Spine
Sternum

Question 19

Skeletal problems

Answer 19

Rheumatoid arthritis
Osteoarthritis
Osteoporosis

Question 20

Rheumatoid arthritis

Answer 20

Immune system attacks joint tissue

Question 21

Epidermis

Answer 21

Mostly dead skin cells
Contain keratin
Constantly replaced

Question 22

Osteoarthritis

Answer 22

Cartilage wears away- bones rub

Question 23

Melanin

Answer 23

Brown skin pigment

Amount depends on heredity, exposure to UV

Question 24

Dermis layer

Answer 24

Living cells 
Sensory neurons 
Blood vessels 
Muscles
Hair follicles 
Exocrine glands

Question 25

Subcutaneous fat

Answer 25

Layer of fat under skin
Energy store
Insulation

Question 26

Z- line

Answer 26

Where actin fibers connect

Question 27

Sebaceous glands

Answer 27

Softens skin and hair
Produce sebum
Bacteria can cause acne

Question 28

Myofibrils

Answer 28

Thread like structure of a muscle fiber

Two protein filaments- myosin, actin