7th Grade: Human Body Systems Vocabulary

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Last updated 7:44 PM on 4/14/26
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33 Terms

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homeostasis

the maintenance of a stable internal environment in the body

<p>the maintenance of a stable internal environment in the body</p>
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tissue

a group of similar cells that perform a common function

<p>a group of similar cells that perform a common function</p>
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organ

a group of tissues that carry out a specialized function of the body

<p>a group of tissues that carry out a specialized function of the body</p>
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organ system

a group of organs that work together to perform body functions

<p>a group of organs that work together to perform body functions</p>
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skeletal system

an organ system that primarily supports and protects the body and allows it to move; it also stores minerals and make blood cells. Includes cartilage, bone and connective tissue.

<p>an organ system that primarily supports and protects the body and allows it to move; it also stores minerals and make blood cells. Includes cartilage, bone and connective tissue.</p>
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joint

a place where 2 or more bones meet; types include: ball and socket, gliding and hinge joints.

<p>a place where 2 or more bones meet; types include: ball and socket, gliding and hinge joints.</p>
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ligament

connect bones at a joint; made of connective tissue

<p>connect bones at a joint; made of connective tissue</p>
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muscular system

organ system whose primary function is movement and flexibility

<p>organ system whose primary function is movement and flexibility</p>
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tendons

strands of connective tissue that connect muscles to bones

<p>strands of connective tissue that connect muscles to bones</p>
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integumentary system

organ system that forms a protective covering on the outside of the body; made of skin, hair and nails.

<p>organ system that forms a protective covering on the outside of the body; made of skin, hair and nails.</p>
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epidermis

surface layer of cells on the skin

<p>surface layer of cells on the skin</p>
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dermis

thicker layer of skin below the epidermis

<p>thicker layer of skin below the epidermis</p>
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cardiovascular system

a collection of organs that transport blood around the body; made of the heart, blood and blood vessels.

<p>a collection of organs that transport blood around the body; made of the heart, blood and blood vessels.</p>
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heart

pumps blood through blood vessels;

<p>pumps blood through blood vessels;</p>
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artery

carries (oxygenated) blood away from the heart to the body's organs

<p>carries (oxygenated) blood away from the heart to the body's organs</p>
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vein

a blood vessel that carries (low oxygen) blood to the heart

<p>a blood vessel that carries (low oxygen) blood to the heart</p>
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capillaries

tiny blood vessels that allow an exchange between the blood and cells of other tissues (an exchange of gases)

<p>tiny blood vessels that allow an exchange between the blood and cells of other tissues (an exchange of gases)</p>
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pulmonary circulation

the flow of blood from the heart to the lungs and back

<p>the flow of blood from the heart to the lungs and back</p>
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circulatory system

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

<p>the flow of blood from the heart to all parts of the body and back to the heart</p>
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blood

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

<p>the fluid that carries gases, nutrients, and wastes through the body; made of plasma, red blood cells, white blood cells and platelets.</p>
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red blood cells

take oxygen to every cell in the body

<p>take oxygen to every cell in the body</p>
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platelets

help blood to CLOT or form a net to stop bleeding

<p>help blood to CLOT or form a net to stop bleeding</p>
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white blood cells

destroy old cells or invaders into the body

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lymphatic system

group of organs that collect fluid and return it to the blood; helps your body fight invaders (pathogens); includes lymph vessels, bone marrow, nodes, thymus, spleen and tonsils

<p>group of organs that collect fluid and return it to the blood; helps your body fight invaders (pathogens); includes lymph vessels, bone marrow, nodes, thymus, spleen and tonsils</p>
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respiratory system

organs that take in oxygen and expel carbon dioxide; include pharynx, larynx trachea, (lungs) bronchi, alveoli

<p>organs that take in oxygen and expel carbon dioxide; include pharynx, larynx trachea, (lungs) bronchi, alveoli</p>
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breathing/ respiration

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

<p>the exchange of oxygen and carbon dioxide between living cells and the environment; breathing and cellular respiration</p>
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digestive system

a group of organs that break down food so it can be used by the body; include teeth, saliva, mouth, esophagus, stomach, pancreas, small intestine, liver, gallbladder, large intestine

<p>a group of organs that break down food so it can be used by the body; include teeth, saliva, mouth, esophagus, stomach, pancreas, small intestine, liver, gallbladder, large intestine</p>
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urinary system

a group of organs that produce, store and eliminate urine; includes kidneys, nephrons, bladder

<p>a group of organs that produce, store and eliminate urine; includes kidneys, nephrons, bladder</p>
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nervous system

organs that gather, interpret and respond to information as needed; includes brain, spinal cord, neurons, nerves

<p>organs that gather, interpret and respond to information as needed; includes brain, spinal cord, neurons, nerves</p>
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central nervous system

brain and spinal cord; the control center; includes cerebrum, cerebellum and medulla

<p>brain and spinal cord; the control center; includes cerebrum, cerebellum and medulla</p>
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peripheral nervous system

nerve tissue outside of the brain and spinal cord

<p>nerve tissue outside of the brain and spinal cord</p>
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endocrine system

collection of glands and cells that release hormones that regulate growth, development and homeostasis

<p>collection of glands and cells that release hormones that regulate growth, development and homeostasis</p>
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reproductive system

a group of organs that produce sex cells, deliver sex cells and/or nurture developing individuals

<p>a group of organs that produce sex cells, deliver sex cells and/or nurture developing individuals</p>