Nervous System
The human brain is made up of 86 billion of what cells?
Neurons
What are the smallest blood vessels?
Capillaries
What do people breathe out?
Carbon Dioxide
What is the gland shaped like a bow tie or butterfly?
Thyroid
What is the largest bone in the human body?
Femur
Cerebrum
What are blood cells that keep people healthy?
White Blood Cells
What are larger, spongy organs in a person's chest?
Lungs
What is the largest endocrine gland?
Pancreas
The tibia and fibula are bones in which body part?
Leg
What is the main purpose of the sensory nerves?
To inform the brain of what is going on in the outside world
What is the main purpose of platelets?
To clot blood when a person is cut
What relationship does the circulatory system have with the respiratory system?
It helps spread oxygen throughout the body.
Thyroid:Neck :: Pancreas: __________________
Stomach
What is the purpose of the mandible?
To chew and talk
Which type of nerve travels from the brain to the muscles?
Motor
Red Blood Cells:Carry Oxygen :: White Blood Cells: __________________
Destroy bacteria and viruses
Why do the number of lobes vary between the lungs?
One lung is smaller to make room for the heart.
To control the amount of something
Red Marrow:Blood Cells :: Yellow Marrow: __________
Stores Fat
Why are reflexes important?
They help protect a person by bypassing the brain and moving a muscle quickly.
Why does the heart beat faster when a person works out?
The heart rate goes up because it is pumping faster to deliver more oxygen to the muscles.
What is the purpose of the larynx?
To help people be heard with their voice
What is the main purpose of adrenaline?
To give people the boost they need in times of trouble
How many bones are in the human body?
206 bones