LS Chap. 14 Bones, Muscles, and Skin

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Chapter 14 Vocabulary Test

Cell

the basic unit of structure and function in a living thing

Tissue

a group of cells that perform a function

Types of tissue

Muscle tissue- must contract and shorten_ Nervous Tissue- directs and controls movements_ Connective Tissue- provides support in your body_ Epithelial Tissue- protects body

Organ

a structure composed of tissue

Organ System

a group of organs that work together to perform a function

Skeleton

made up of all bones in a body

Vertebrae

made of 26 smaller bones(backbone)

Joint

a place in the body where 2 bones come together

Ligament

a strong connective tissue that holds the bones in movable joints together

Cartilage

another type of connective tissue that is more flexible then bone and covers the ends of the bones and keeps them from rubbing against each other

Compact Bone

located under the bones membrane and is hard and dense, but not exactly solid

Spongy Bone

has small spaces in it and is lightweight but very strong

Marrow

Red- produces most of the body's blood cells_Yellow- stores fat that can serve as an energy reserve

Sprain

occurs when a ligament is stretched too far and tear in places

Dislocation

occurs when the bone comes out of its joint

Fracture

a break in a bone

X-ray

a form of energy that travels in waves

MRI (Magnetic Resonance Imaging)

a method for taking clear images of both bones and soft tissues of the body

Involuntary Muscles

responsible for such essential activities like breathing and digesting food; cannot control these muscles

Voluntary Muscles

under your conscious control

Skeletal Muscles

attatched to the bones of your skeleton and provides force that move your bones

Tendon

a strong connective tissue that connects muscles to bone

Striated Muscle

another word for Skeletal Muscles

Smooth Muscles

are in internal organs like the stomach and blood vessels

Cardiac Muscles

found only in heart

cell membrane

forms the outside boundary of the cell

nucleus

control center that directs the cell's activities and contains genetic information.

muscle tissue

can contract or shorten

nervous tissue

carries electrical messages back and forth in the body

connective tissue

provides support and attaches all the body parts

epithelial tissue

skin is an example and it protects whiat lies beneath it.

homeostasis

body's tendency to keep an internal balance

stress

the reaction of your body to potentially threatening, challenging, or disturbing events

immovable joint

also called fixed. Connects bones that allow very little to no movement such as in the skull

tendon

connective tissue that holds muscles to bone

hinge joint

type of joint found in the knee, elbow, toes, and fingers

ball and socket joint

type of joint found in the shoulder and hip

pivot joint

type of joint found in the neck

gliding joint

type of joint found in the wrist and ankle

osteoperosis

a condition where the body's bones become weak and break easily

skin functions

protection, water loss prevention, regulate body temperature, eliminate wastes, gather information about the environment, and produce vitamin D

Vitamin D

made in sunlight by skin and aids in calcium absorption from food to your body

epidermis

outer layer of skin

dermis

inner layer of skin

pores

opening in the skin to release perspiration, oil, and other wastes

follicle

hair strands in the dermis

melanoma

a type of skin cancer caused by UV rays of the sun

compound fracture

a break in the bone where the bone pokes through the skin

simple fracture

a complete break in the bone

hairline fracture

a crack in the bone. Bone is not broken into two.

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