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100

The organ system consisting of the heart and blood vessels that moves blood through the body.

What is Circulatory System?

100

The organ system that removes cellular wastes from the body.

What is excretory system?

100

The organ system that breaks down food so that it can be absorbed into the bloodstream


What is digestive system?

100

This system releases hormones into your body to change its activity. What is it?

What is endocrine system

100

The set of organs that uses information from the senses to control other body systems.

What is a nervous system?

200

The skeletal system is made up of what three things?

Bones, tendons, and ligaments

200
The stomach breaks down partially digested food and empties it into the ___________.
small intestine
200
Where is oxygen-rich blood pumped to after it reaches the heart?
All over the body
200

As mammals, we use our lungs to breath in oxygen, what do fish use to pull oxygen out of the water they swim in?

 gills

200
When your bladder gets full, what part of your body carries the urine from the bladder to the outside of the body?
the urethra
300

The power to produce movement is provided by which system?

The muscular system

300
The kidneys remove waste from the blood using millions of tiny filters called ___________.
Nephrons
300

What muscle massages the food down into your stomach?

esophagus

300

Which organism has an exoskeleton?

a. rabbit b. grasshopper c. dog  e. jellyfish

grasshopper

300
What type of animals have a closed circulatory system, and which type of animals have an open circulatory system?
Vertebrates have a closed circulatory system and arthropods and other invertebrates have an open circulatory system.
400
Fill in the blank: When a muscle _________ it pulls on the bone its attached to. When a muscle _________ it is not putting pressure on the bone it is attached to.
1- contracts 2- relaxes
400
The _________reabsorbs water from the undigested food before the remaining solid waste is passed through to exit the body.
large intestine
400

The brain, the spinal cord, nerves and sense organs are part of which organ system?

Nervous sytem

400
What hormone increases the heart rate and sends extra blood to the muscles to make us move faster or be stronger than we normally are?
adrenaline
400
Which two vital organs does the rib cage protect?
The lungs and heart
500
Before an animal can move any muscle, what needs to happen first?
A message needs to be sent from the brain to the muscle.
500
Besides using the bathroom, what is one other way in which the body excretes waste?
Sweating
500
Through which system does your blood take in oxygen from the air?
the respiratory system
500
This system allows you to see, hear, feel, taste, think, and move. What is it?
the nervous system
500
When a rabbit needs to run from danger, how are the circulatory, respiratory, skeletal, muscular, and nervous systems put into use?
circulatory system pumps blood to the body, respiratory system allows the rabbit to breath in and out quickly, skeletal system allows the rabbit to stand upright and protect organs, muscular system allows the rabbit to move its legs quickly, and nervous system tells the body to move when it needs to.