What does the central nervous system consist of?
The brain and spinal cord; acts as the command center for all communication and actions of the body.
What does the peripheral nervous system consist of?
Nerves and ganglia that branch out from the brain and spinal cord to the rest of the body, allowing signals sent by the brain to reach their target destinations.
What does the autonomic nervous system control?
Involuntary actions.
What does the somatic nervous system control?
Voluntary actions.
What do sensory nerves do?
Send messages to the brain.
Name the three types of muscles:
Skeletal, cardiac, and smooth.
Where can smooth muscles be found?
In the walls of hollow organs, such as the stomach and intestines; in the walls of blood vessels… Smooth muscles is the weakest of all muscle tissues.
What are tendons?
Tough connective tissue that attaches muscle to bone.
What is a sarcomere?
The contracting unit of a muscle.
What is myosin?
The thick filaments in a muscle cell.
What is actin?
The thin filaments in a muscle cell.