Exam 4 Flashcards
(29 cards)
What are the two main divisions of the nervous system?
Central nervous system (CNS) and peripheral nervous system (PNS).
True or False: The central nervous system includes the brain and spinal cord.
True.
Fill in the blank: Neurons communicate with each other through __________.
synapses.
What type of cell in the nervous system is responsible for supporting and protecting neurons?
Glial cells.
Multiple Choice: Which of the following is NOT a type of neuron? A) Sensory B) Motor C) Connective D) Interneuron
C) Connective.
What is the primary function of sensory neurons?
To carry signals from sensory receptors to the central nervous system.
True or False: Myelin sheath increases the speed of nerve impulse conduction.
True.
What are the gaps in the myelin sheath called?
Nodes of Ranvier.
Multiple Choice: Which part of the neuron receives signals from other neurons? A) Axon B) Dendrite C) Soma D) Synapse
B) Dendrite.
What is the function of the axon in a neuron?
To transmit electrical impulses away from the cell body.
Fill in the blank: The __________ is the junction between two neurons.
synapse.
True or False: All glial cells are involved in transmitting electrical signals.
False.
What is the role of oligodendrocytes?
To form myelin sheath in the central nervous system.
Multiple Choice: Which glial cell type is responsible for the immune response in the CNS? A) Astrocytes B) Microglia C) Ependymal cells D) Schwann cells
B) Microglia.
What is the main function of astrocytes?
To support and maintain the environment for neurons.
Fill in the blank: The __________ nervous system controls involuntary actions.
autonomic.
True or False: The somatic nervous system is responsible for voluntary movements.
True.
What are the two subdivisions of the autonomic nervous system?
Sympathetic and parasympathetic.
Multiple Choice: Which neurotransmitter is primarily associated with the sympathetic nervous system? A) Dopamine B) Norepinephrine C) Serotonin D) Acetylcholine
B) Norepinephrine.
What is the term for the electrical signal that travels down the axon?
Action potential.
Fill in the blank: The __________ is a protective layer around the brain and spinal cord.
meninges.
True or False: The brain is the control center for reflex actions.
False.
What is the primary function of the spinal cord?
To transmit signals between the brain and the rest of the body.
Multiple Choice: Which structure is responsible for higher cognitive functions? A) Brainstem B) Cerebellum C) Cerebrum D) Spinal cord
C) Cerebrum.
