Ch 3 Slideshow (11-21) Flashcards
What are the two major parts of the nervous system?
Central Nervous System (CNS) and Peripheral Nervous System (PNS)
What is the primary function of neurons?
To carry information between different parts of the body and the nervous system
What are the two divisions of the peripheral nervous system?
Somatic nervous system and autonomic nervous system
What does the autonomic nervous system regulate?
Involuntary functions like heartbeat and digestion
What is the role of the sympathetic nervous system?
Responsible for the fight-or-flight response
What does the parasympathetic nervous system do?
It calms the body down after stress
What are the types of neurons?
Afferent neurons, efferent neurons, and interneurons
What is the function of afferent neurons?
Carry signals from the peripheral nervous system to the central nervous system
What do efferent neurons do?
Carry signals from the central nervous system to the peripheral muscles and glands
What is the function of interneurons?
Relay signals between sensory and motor neurons
What are the main structures of the hindbrain?
Medulla, pons, cerebellum, reticular formation
What does the medulla regulate?
Heartbeat, breathing, sneezing, coughing
What is the role of the cerebellum?
Coordinates motor movements and learning involving movement
What does the reticular formation control?
Regulates the sleep/wake cycle
What is the function of the substantia nigra in the midbrain?
Important for the fluidity of movement