Introduction to Nervous System

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What are the two major parts of the Nervous System?

The Somatic Nervous System (SNS) and The Autonomic Nervous System (ANS)
Central Nervous System (CNS) and Autonomic Nervous System (ANS)
The Central Nervous System (CNS) and The Peripheral Nervous System (PNS) (correct)
The Motor Nervous System (MNS) and The Sensory Nervous System (SNS)

What are the two types of motor fibers of the peripheral nervous system?

Afferent and efferent fibers
Somatic motor fibers and Autonomic fibers (correct)
Sensory and motor fibers
Sympathetic and parasympathetic fibers

What type of fibers transmit signals from receptors of various types?

Sensory (or afferent) fibers (correct)
Motor (or efferent) fibers
Somatic motor fibers
Autonomic fibers

What is the function of the dorsal ramus?

Supplying sensory innervation to the skin over the spine and muscular innervation to the paraspinal muscles (C) Signup and view all the answers

What is the name of the part of the neuron where the motor fibers terminate?

Motor end plate (C) Signup and view all the answers

How many pairs of Cranial Nerves are there in the Peripheral Nervous System?

12 pairs (A) Signup and view all the answers

What is the function of the sensory root?

Transmit signals from receptors of various types (B) Signup and view all the answers

In which region of the body do the ventral rami unite to form the brachial plexus?

Lower cervical to upper thoracic (C5–T1) (A) Signup and view all the answers

How many pairs of Spinal Nerves are there in the Peripheral Nervous System?

31 pairs (B) Signup and view all the answers

What is the function of the PNS in relation to the CNS?

It conveys input and output signals to and from the CNS (C) Signup and view all the answers

What type of system conveys information from the skin and the musculoskeletal system to areas of the brain?

Somatosensory system (A) Signup and view all the answers

What term is used to describe signals passing to the CNS?

Afferent (B) Signup and view all the answers

What type of neurons transmit information from the central system to peripheral structures?

Efferent neurons (A) Signup and view all the answers

In which region of the body do the ventral rami continue as intercostal nerves?

Thoracic region (D) Signup and view all the answers

What is the function of the CNS?

It integrates and controls the entire nervous system (B) Signup and view all the answers

What type of neurons connect only with other neurons?

Interneurons (D) Signup and view all the answers

What is the primary function of the cerebellum?

Posture, balance, and coordination of voluntary motor activity (B) Signup and view all the answers

What is the function of the brain stem?

Regulating basic bodily functions such as breathing, heart rate, and sleep (B) Signup and view all the answers

What is the main function of the spinal cord?

Conveying information between neurons and processing reflexes (A) Signup and view all the answers

What is the function of gray matter in the central nervous system?

Containing primarily neuron cell bodies (A) Signup and view all the answers

What is a bundle of axons that travel together in the central nervous system called?

Tract, lemniscus, fasciculus, column, peduncle, or corpuscle (B) Signup and view all the answers

What is the function of the corpus callosum?

Connecting the two cerebral hemispheres (C) Signup and view all the answers

What is the main function of the cerebral hemispheres?

Managing higher-level cognitive functions (B) Signup and view all the answers

What is the function of white matter in the central nervous system?

Conveying information away from the cell body (C) Signup and view all the answers

What is the term for groups of cell bodies in the central nervous system?

Nuclei (D) Signup and view all the answers

What is the main function of glial cells in the nervous system?

Providing support and protection to neurons (D) Signup and view all the answers

What is the basic structure and functional unit of the nervous system?

Neuron (B) Signup and view all the answers

What is the role of the meninges in the nervous system?

To provide support and protection to the brain and spinal cord (A) Signup and view all the answers

What is the function of the cell body of a neuron?

To receive and process nerve impulses (B) Signup and view all the answers

What is the function of dendrites in a neuron?

To carry impulses towards the cell body (B) Signup and view all the answers

What type of circuit conveys impulses that result in an involuntary response?

Reflex circuit (A) Signup and view all the answers

What is the term for groups of cell bodies in the peripheral nervous system?

Ganglion (B) Signup and view all the answers

What is the primary function of relay circuits in the nervous system?

To convey impulses from sensory organs to the brain (A) Signup and view all the answers

What is the term for a series of neurons that work together to achieve a specific function?

Functional path (C) Signup and view all the answers

Where are the nerve cell bodies located in a functional path?

In the nuclei, ganglia, or laminae (C) Signup and view all the answers

What is the term for the bundles of axons in a functional path?

All of the above (D) Signup and view all the answers

What is the primary function of the meninges?

To support and protect the CNS (B) Signup and view all the answers

What is the most common cause of meningitis?

Viral infection (B) Signup and view all the answers

What is a common symptom of meningitis in adults?

Neck stiffness and headache with fever (A) Signup and view all the answers

What is the term for the large opening in the base of the skull where the brain and spinal cord are continuous?

Foramen magnum (A) Signup and view all the answers