biology Flashcards
What is the primary function of the nervous system?
To control and coordinate body activities by transmitting signals between different parts of the body.
True or False: The endocrine system uses hormones to communicate and regulate bodily functions.
True
Fill in the blank: The _____ is the basic unit of the nervous system.
neuron
What are the two main parts of the nervous system?
Central nervous system (CNS) and peripheral nervous system (PNS).
Short answer: What is the role of sensory neurons?
To transmit sensory information from receptors to the central nervous system.
Multiple choice: Which part of the brain is responsible for coordination and balance?
Cerebellum
What is a reflex action?
An automatic, rapid response to a stimulus that does not involve conscious thought.
True or False: Hormones are produced by glands in the endocrine system.
True
Fill in the blank: The _____ carries signals away from the neuron.
axon
What is homeostasis?
The process by which organisms maintain a stable internal environment.
Short answer: Name one function of the hypothalamus.
To regulate body temperature and maintain homeostasis.
Multiple choice: Which hormone is primarily responsible for the fight-or-flight response?
Adrenaline
What is the function of the myelin sheath?
To insulate axons and increase the speed of nerve impulse transmission.
True or False: The spinal cord is part of the peripheral nervous system.
False
Fill in the blank: The _____ connects the brain to the rest of the body.
spinal cord
Short answer: What is the role of motor neurons?
To transmit signals from the central nervous system to muscles and glands.
Multiple choice: Which gland is known as the ‘master gland’?
Pituitary gland
What is the role of neurotransmitters?
To transmit signals across synapses between neurons.
True or False: The autonomic nervous system controls voluntary movements.
False
Fill in the blank: The _____ is responsible for processing visual information.
occipital lobe
Short answer: What is the function of the adrenal glands?
To produce hormones that help regulate metabolism, immune response, and stress.
Multiple choice: Which part of the brain controls breathing and heart rate?
Medulla oblongata
What is the function of the limbic system?
To regulate emotions, memory, and motivation.
True or False: Insulin is a hormone that lowers blood glucose levels.
True