Grade 7 Chapter 6 Science Holt Science And Technology

Front 1

cardiovascular system

Back 1

a collection of organs that transport blood throughout the body

Front 2

artery

Back 2

a blood vessel that carries blood away from the heart to the body's organs

Front 3

capillary

Back 3

a tiny blood vessel that allows an exchange between blood and cells in other tissue

Front 4

vein

Back 4

a vessel that carries blood to the heart

Front 5

pulmonary circulation

Back 5

the flow of blood from the heart to the lungs and back to the heart through the pulmonary arteries, capillaries and veins

Front 6

systemic circulation

Back 6

the flow of blood from the heart to all parts of the body and back to the heart

Front 7

blood

Back 7

the fluid that carries gases, nutrients and wastes through the body and that is made up of platelets, white blood cells, red blood cells and plasma

Front 8

blood pressure

Back 8

the force that blood exerts on the walls of the arteries

Front 9

lymphatic system

Back 9

a collection of organs whose primary function is to collect extracellular fluid and return it to the blood

Front 10

lymph

Back 10

the fluid that is collected by the lymphatic vessels and nodes

Front 11

lymph node

Back 11

an organ that filters lymph and that is found along the lymphatic vessels

Front 12

thymus

Back 12

the main gland of the lymphatic system, it produces mature T lymphocytes

Front 13

spleen

Back 13

the largest lymphatic organ in the body

Front 14

tonsils

Back 14

organs that are small, rounded masses of lymphatic tissue located in the pharynx and in the passage from the mouth to the pharynx

Front 15

respiration

Back 15

the exchange of oxygen and carbon dioxide between living cells and their environment; includes breathing and cellular respiration

Front 16

respiratory system

Back 16

a collection of organs whose primary function is to take in oxygen and expel carbon dioxide

Front 17

pharynx

Back 17

the passage from the mouth to the larynx and esophagus

Front 18

larynx

Back 18

the area of the throat that contains the vocal cords and produces vocal sounds

Front 19

trachea

Back 19

the tube that connects the larynx to the lungs

Front 20

bronchus

Back 20

one of the two tubes that connect the lungs with the trachea

Front 21

alveoli

Back 21

any of the tiny air sacs of the lungs where oxygen and carbon dioxide are exchanged