Nervous System Flashcards
What is the primary function of the nervous system?
To coordinate and control the body’s activities and responses to internal and external stimuli.
True or False: The nervous system is divided into the central nervous system and the peripheral nervous system.
True
Fill in the blank: The central nervous system consists of the ______ and the ______.
brain; spinal cord
What are the two main types of cells in the nervous system?
Neurons and glial cells.
Multiple Choice: Which of the following is NOT a function of glial cells?
A) Support neurons
B) Transmit electrical signals
C) Maintain homeostasis
D) Form myelin sheaths
B) Transmit electrical signals
What is the role of myelin in the nervous system?
To insulate axons and increase the speed of electrical impulses.
True or False: The peripheral nervous system includes the brain and spinal cord.
False
What are the two main divisions of the peripheral nervous system?
Somatic nervous system and autonomic nervous system.
Fill in the blank: The autonomic nervous system is further divided into the ______ and ______ divisions.
sympathetic; parasympathetic
What is the primary function of the sympathetic nervous system?
To prepare the body for ‘fight or flight’ responses.
Multiple Choice: Which part of the neuron receives signals from other neurons?
A) Axon
B) Dendrite
C) Soma
D) Myelin
B) Dendrite
What is a synapse?
The junction between two neurons where communication occurs.
True or False: Neurotransmitters are chemical messengers that transmit signals across a synapse.
True
What is the function of the brainstem?
To control basic life functions such as heartbeat and breathing.
Fill in the blank: The ______ lobe is responsible for processing visual information.
occipital
What is the role of the cerebellum?
To coordinate voluntary movements and maintain balance.
Multiple Choice: Which part of the brain is involved in higher cognitive functions?
A) Cerebellum
B) Brainstem
C) Cerebrum
D) Medulla
C) Cerebrum
What is the function of the spinal cord?
To transmit signals between the brain and the rest of the body and coordinate reflexes.
True or False: Reflex actions do not involve the brain.
True
What is the difference between sensory neurons and motor neurons?
Sensory neurons carry signals from sensory receptors to the central nervous system, while motor neurons carry signals from the central nervous system to muscles and glands.
Fill in the blank: The ______ nervous system is responsible for involuntary body functions.
autonomic
What is meant by ‘plasticity’ in the nervous system?
The ability of the nervous system to change and adapt in response to experience.
Multiple Choice: Which of the following is a neurotransmitter?
A) Insulin
B) Serotonin
C) Hemoglobin
D) Glucose
B) Serotonin
What is the primary role of the hypothalamus?
To regulate homeostasis and control the endocrine system.
True or False: The limbic system is involved in emotions and memory.
True
What part of the nervous system is responsible for voluntary muscle movements?
The somatic nervous system.
