30 Questions
What is the primary function of the sensory division of the nervous system?
Transmitting impulses from sensory receptors to the CNS
Which type of neuroglia is responsible for forming the myelin sheath around axons in the PNS?
Schwann cells
What is the primary function of the motor division of the nervous system?
Transmitting impulses from the CNS to muscles and glands
Which part of the nervous system consists of the brain and spinal cord?
Central Nervous System (CNS)
What is the primary function of ependymal cells in the CNS?
Producing cerebrospinal fluid (CSF)
What is the second function of the nervous system?
Processing and interpreting sensory input
What is the main factor responsible for maintaining the resting membrane potential?
The unequal distribution of ions across the membrane
What is the function of voltage-gated sodium channels in action potential generation?
To allow sodium ions to rush into the cell
What is the primary function of the cerebellum?
Coordination and balance
What is the purpose of the synapse in neurons?
To allow communication between cells
Which region of the brain connects the cerebrum to the spinal cord?
Brainstem
Where is the third ventricle located in the brain?
In the diencephalon
Where does the CSF circulate through in the body?
Through the ventricles of the brain, the central canal of the spinal cord, and the subarachnoid space
What is the main difference between the gray and white matter in the spinal cord?
The gray matter contains cell bodies of neurons
What is the significance of the hands, lips, face, and tongue being overrepresented in the homunculus?
They are more sensitive and have more motor control
What is the location of the fourth ventricle?
Between the brainstem and cerebellum
What is the role of the cerebral cortex in terms of voluntary movement?
It initiates and coordinates voluntary movements by sending signals to the spinal cord and brainstem
What is the function of the association fibers?
Connect different parts of the same hemisphere
What is the peripheral nervous system (PNS) composed of?
Nerves and ganglia outside the CNS
What is the role of the hypothalamus?
Regulates homeostasis and endocrine function
How many pairs of cranial nerves are there?
12
What is the function of the medulla oblongata?
Regulates breathing and heartbeat
What is the function of the cerebellum?
Involved in motor control and coordination
What is the function of the central sulcus?
Separates the frontal and parietal lobes
Which plexus is responsible for supplying muscles and skin of the shoulder, arm, and hand?
Brachial Plexus
What is the main function of the phrenic nerve arising from the Cervical Plexus?
Crucial for breathing
Which nerves form the Lumbar Plexus?
L1-L4
Which plexus is responsible for innervating the neck, back of the head, and shoulder?
Cervical Plexus
What is the function of the Sacral Plexus in terms of lower limb movement?
Maintaining posture, balance, and lower limb movement
How are plexuses formed in the body?
By the branching and rejoining of peripheral nerves
Get ready to ace your nervous system exam! This quiz reviews the basic functions of the nervous system, including sensory input, integration, and motor output, as well as the structural and functional divisions of the nervous system. Test your knowledge and identify areas for improvement.
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