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Body Systems
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33
Science
7th Grade
06/02/2011

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Cards

Term
Vein
Definition
Blood vessel that carries blood back to the heart
Term
Excretory System
Definition
Removes wastes and helps maintain water levels in body
Term
Compare and Contrast Large and Small intestine.
Definition

Similair: Both part of digestive system. Both tube-shaped, both break down food.

 

Different: Small intestine digests fats, carbs, and rest of food. While large intestine absorbs waters and minerals that remain.

Term
Pancreas
Definition
Produces enzymes that digest large molecules
Term
Systemic Circulation
Definition
Oxygen-rich blood moves to all other organs and tissues
Term
Mechanical Digestion
Definition

Takes place when food is chewed, mixed, and churned. 

Organs: Mouth (tongue and teeth.)

Term
Heart
Definition
Made of cardiac muscle tissue and protected by sternum and ribcage.
Term
Small Intestine
Definition

Digestion + absorbtion of all organic molecules takes place here.

Lots of villi increase surface for absorbtion

Term
Enzymes
Definition

Speed up rate of chemical reaction in your body. Reason why chemical digestion is possible. 

 

Important Enyzymes - amylase and pepsin.

Term
Circulatory System
Definition
Carries oxygen and nutrients to all cells of your body
Term
Digestive System
Definition
Group of organs that work together to break down food into smaller pieces that body can use.
Term
Artery
Definition
Blood vessel that carries blood away from the heart
Term
Kidneys
Definition

Pair of bean shaped organs that filter blood

Made of nephrons

Term
Capillaries
Definition
Tiny, thin blood vessels.
Term
4 Main functions of Digestive System
Definition

Ingestion

Digestion

Absorbtion

Elimination

(IDAE)

Term
Other organs
Definition
Produce bile to: break apart fat
Term
Villi
Definition
Tiny folds that line small intestine to increase surface area so more nutrients are absorbed
Term
Bladder
Definition
Muscular organ that stores urine
Term
Functions of skeletal system
Definition

1. Gives shape and support to body

2. Protects internal organs

3. Major muscles are attached for movement

4. Blood cells formed in red marrow in center of many bones

5. Storage of calcium and phosphorus compounds (Makes bones hard)

Term
Compact Bone
Definition
Hard, strong layer; gives bone strenth, contains alot of calcium and phosphorus. 
Term
Marrow
Definition
Tissue that forms red blood cells, white blood cells, and platelets.
Term
Spongy Bone
Definition
At ends of long bone. Has small, open spaces to make bones light. Cavities inside spony bone are filled with marrow.
Term
Periosteum
Definition
Thin membrane covering the entire surface of bone. (Except inside joints)
Term
Bone cells
Definition
Make up the compact bone and spongy bone (along with minerals)
Term
Striated
Definition
Striped, strong.
Term
Skeletal
Definition

- Attached to bones by tendons

- Voluntary

- Movement

-Striated

Term
Smooth
Definition

- Digestive, Respitory, Repro, Urinary, Blood vessels.

- Involuntary

Term
Function of Blood
Definition
Carries oxygen to body tissues and glucose.
Term
Pulmonary Circuit
Definition
Heart goes from heart to lungs, back to heart
Term
Pharynx
Definition
= Throat
Term
Larynx
Definition
= Vocal cords
Term
Trachea
Definition
=Windpipe
Term
Bronchi
Definition
Tubes that bracnh from trachea
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