What converts sound waves to electrical impulses in the nervous system? Oval window
Pinna
Cochlea
Tympanic membrane
Where are the organs associated with balance located?
The brain
The heart
The ear
The stomach
What type of muscle typically forms a lining for various organs?
Rough muscle
Smooth muscle
Cardiac muscle
Skeletal muscle

What are the body's two systems of internal communication?
Digestive and Endocrine systems
Nervous and Respiratory system
Respiratory and Endocrine systems
Endocrine and Nervous systems