skin
layer of skin that holds melanin
epidermis
muscles always work in _______
pairs
two types of bone tissue
spongey and compact
found on your joints to help prevent bones from rubbing against eachother
cartilage
an injury where blood vessels in the skin are broken
bruise
thick layer of skin that contains sweat glands
dermis
skeletal muscle can be consciously controlled therefore it is
voluntary
tissues that connect bones
ligaments
shoulder and hip
ball and socket
a disease that causes joints to become irritated
arthritis
pigment that protects the skin from UV rays
melanin
this muscle is found lining your internal organs
smooth
Protective layer that surrounds bone
Periosteum
knee and elbow
hinge
a disease causes bones to become brittle
osteoporosis
water salts and other waste products get removed through ________ in the skin
pores
attach muscles to bone
tendons
regions of bone that produce new cells
growth plate
pivot
an injury where the bone is broken
fracture
this happens when the dermis muscles contract
goosebumps
vitamin important for healthy muscles
vitamin C
three things that bones produce
red blood cells, fat, calcium
in a ball and socket joint _____ bone marrow is found at the round part of the bone
red
a disease caused by a lack of vitamin D
rickets