Life Sci Human Body

Front 1

Melanin

Back 1

Pigment in the epidermis that protects the skin from the Sun's rays and also gives eyes their color.

Front 2

villi

Back 2

Fingerlike projections in the small intestine that increase the surface area for food absorption.

Front 3

hemoglobin

Back 3

the chemical in red blood cells that carries oxygen from the lungs to body cells and carries some carbon dioxide back to the lungs.

Front 4

antibody

Back 4

a protein made in response to a certain antigen that can attach to the antigen and make in useless.

Front 5

larynx

Back 5

the airway to which the vocal cords are attached

Front 6

neuron

Back 6

basic cell of the nervous system; made up of a cell body, dendrites and axons

Front 7

ligaments

Back 7

connective tissues that attaches bones to bones

Front 8

dermis

Back 8

layer of skin that contains blood vessels, nerves, glands and other structures

Front 9

peristalsis

Back 9

waves of muscular contraction that move food through the digestive tract

Front 10

platelet

Back 10

irregularly shaped cell fragment that helps clot blood and release fibrin

Front 11

antigen

Back 11

complex molecule that is foreign to your body

Front 12

alveoli

Back 12

tiny, thin-walled structures in the lungs used for exchange of oxygen and carbon dioxide

Front 13

synapse

Back 13

small space across which an impulse moves from an axon to the dendrites or cell body of another neuron

Front 14

tendons

Back 14

thick band of tissue that attach muscle to bone

Front 15

cardiac

Back 15

having to do with the heart; heart muscle

Front 16

calorie

Back 16

unit used to measure the amount of energy that is stored in food

Front 17

aorta

Back 17

main blood vessel leaving the left ventricle of the heart

Front 18

lymph

Back 18

tissue fluid that has diffused into the capillaries

Front 19

ureter

Back 19

tube that carries urine from each kidney to the bladder

Front 20

spinal cord

Back 20

cord from the brain, through the vertebrae to the sacrum, that carries nervous system messages

Front 21

marrow

Back 21

materials in the center bones that produces blood cells

Front 22

periosteum

Back 22

tough, tight-fitting membrane that covers a bone's surface and contains blood vessels that transport nutrients to the bone

Front 23

atrium

Back 23

upper chamber of the heart that pumps blood to the lower chamber of the heart

Front 24

artery

Back 24

carries blood away from the heart

Front 25

bronchi

Back 25

two short tubes that branch off the trachea and go to the lungs

Front 26

nephron

Back 26

tiny filtering unit of the kidney

Front 27

nutrient

Back 27

substances in food that provide energy and materials for cell development, growth and repair

Front 28

cartilage

Back 28

tough, flexible tissue that joins vertebrae in the backbone

Front 29

chyme

Back 29

the semi-digested fluid that is released from the stomach into the intestines

Front 30

ventricle

Back 30

lower chamber of the heart that pumps blood out of the heart

Front 31

plasma

Back 31

liquid part of the blood, make mostly of water, in which oxygen, nutrients, and minerals are dissolved.

Front 32

trachea

Back 32

tube in the throat often called the windpipe

Front 33

kidney

Back 33

bean-shaped organ in the urinary system that is made up of about 1 million nephrons and filters blood, producing urine