Shared Flashcard Set

Details

Organ Systems & Homeostasis
Life Science Chapter 13, Section 1
48
Science
7th Grade
03/06/2013

Additional Science Flashcards

 


 

Cards

Term
From smallest to largest, the body's levels of organization are:
Definition
Cell, tissue, organs & organ system.
Term
What is the function of the nucleus?
Definition
Directs the cell's activities.
Term
What does the nucleus contain & what is it?
Definition
DNA - information that determines the cells form & function.
Term
What is the function of cells?
Definition
The basic unit of structure & function in living things.
Term
What are tissues?
Definition
A group of specialized cells that perform the same function.
Term
What are the 4 types of tissues?
Definition
Muscle, nervous, connective & epithelial.
Term
What is the job of muscle tissue?
Definition
Makes parts of your body move by contracting or shortening.
Term
What does nervous tissue do?
Definition
Directs & controls the process. They carry electrical messages between the brain & other parts of the body.
Term
What does connective tissue do?
Definition
Provides support for your body & connects all its parts.
Term
What are examples of connective tissue?
Definition
Bone tissue & fat.
Term
What is epithelial tissue?
Definition
Tissue that covers the surfaces of your body inside & out.
Term
What is an organ?
Definition
A structure that is composed of different kinds of tissue & does a specific job.
Term
What are examples of organs?
Definition
Stomach, heart, brain & lungs.
Term
What is the job of the heart?
Definition
Pumps blood through your body.
Term
What kind of tissue does the heart contain?
Definition
All four - muscle, nervous, connective & epithelial.
Term
What is an organ system?
Definition
A group of organs that work together to perform a major function.
Term
How many organ systems does the human body contain?
Definition
11
Term
What do the integumentary, skeletal & muscular organ systems do?
Definition
Provide structure & allow movement.
Term
What do the circulatory, respiratory, digestive, excretory, immune & reproductive systems do?
Definition
Carry out the process of life.
Term
What do the nervous & endocrine systems provide?
Definition
Control over body process.
Term
For each system to function, what must happen?
Definition
It's organs, tissues & cells must work together.
Term
CEEDIIMNRRS
Definition
Circulatory, Endocrine, Excretory, Digestive, Immune, Integumentary, Muscular, Nervous, Reproduction, Respiratory, Skeletal.
Term
Circulatory System
Definition
Carries food & oxygen to all the cells. Transportation network.
Term
Endocrine System
Definition
Releases hormones by a collection of glands.
Term
Excretory System
Definition
Removes waste.
Term
Digestive System
Definition
Breaks down food.
Term
Immune System
Definition
Protects body from disease.
Term
Integumentary System
Definition
Skin, hair & nails.
Term
Muscular System
Definition
Muscles
Term
Nervous System
Definition
Receives information & commands the body to respond.
Term
Reproductive System
Definition
Sex cells.
Term
Respiratory System
Definition
Lungs - moves air in & out of the body.
Term
Skeletal System
Definition
Bones & connective tissue.
Term
What is the body's largest organ?
Definition
Skin
Term
What are the major organs of the excretory system & what are their function?
Definition
2 Kidneys - they remove waste & needed material from the blood. Filtering factories.
Term
Where is urine stored till is leaves the body?
Definition
Bladder
Term
What creates urine?
Definition
Waste from the kidneys is combined with water.
Term
What are pathogens?
Definition
Bacteria & viruses.
Term
What are antibodies?
Definition
Proteins that destroy pathogens.
Term
What is immunity?
Definition
Destroys pathogens before they cause disease.
Term
What are hormones?
Definition
Chemicals that change the activity in your body's cells.
Term
What are glands?
Definition
Tissues that produce & release hormones.
Term
What is homeostasis?
Definition
Internal balance. Your internal enironment is kept stable despite the outside enironment.
Term
How does your body maintain homeostasis?
Definition
When your too warm, your body sweats to cool down. When you are cold, you shiver, which produces heat.
Term
What does your muscles do when you shiver?
Definition
Rapidly contract & relax.
Term
What is stress?
Definition
Body's reaction to threatening events by releaseing adrenaline. Ex: fast heart beat & increased breathing…..like when you finish a dance on stage.
Term
What is adrenaline?
Definition
Chemical that gives you a burst of energy & prepares your body for action. It's released into the blood stream by endocrine system.
Term
What's the difference between tissues & organs?
Definition
Tissues are cells that produce the same function & organs are different tissues that do a specific job.
Supporting users have an ad free experience!