What does your body use to send signals back and forth from your brain to other parts of your body?
Messages are carried back and forth between the brain and other parts of the body by
A tendon is a
The brain is composed of many cells and different tissues. At what level of organization is the brain?
The part of the nervous system that contains your brain and spinal cord is called the
The thick column of nerve tissue that links the brain to most of the nerves in the peripheral nervous system is the
A change or signal in the environment that can make an organism react is called a(an)
Blood vessels that carry blood away from the heart are called
What is the main function of the circulatory system?
Which of these is NOT a function of the cardiovascular system?
If a person’s blood lacked platelets, what process could not take place?
What happens to blood in the lungs?
Blood that leaves the LEFT side of the heard is pumped to:
What branch of the nervous system receives information from the environment and relays commands to parts of the body?
When the nervous system makes you feel hungry or thirsty, what body process is it helping to carry out?
The somatic nervous system works with the skeletal system because
Which two systems work together to enable you to bend your arm?
Which part of your nervous system is responsible for balance and coordination?
Skeletal muscles must work in pairs because
The muscles that you use to lift a book are