Unit-I: Nervous System Overview

The basic functions of the nervous system include sensory, integration/analysis, and motor.

The three functions of the nervous system are sensory, integration, and motor.

The two main parts of the nervous system are the Central Nervous System (CNS) and Peripheral Nervous System (PNS).

<p>Somatic Nervous System</p> Signup and view all the answers

<p>Autonomic Nervous System</p> Signup and view all the answers

<p>Increased digestion</p> Signup and view all the answers

<p>The two main types of cells that make up nervous tissue are neurons and neuroglial cells.</p> Signup and view all the answers

<p>False</p> Signup and view all the answers

<p>The three main parts of a neuron are the cell body, dendrites, and axon.</p> Signup and view all the answers

<p>The myelin sheath insulates the axon, which speeds up the transmission of nerve impulses.</p> Signup and view all the answers

<p>The gap between two neurons at a synapse is called the synaptic cleft.</p> Signup and view all the answers

<p>Neurotransmitters are chemical messengers that transmit signals from one neuron to another or from a neuron to a target cell.</p> Signup and view all the answers

<p>Insulin</p> Signup and view all the answers

<p>The meninges are three layers of membranes that protect and support the brain and spinal cord.</p> Signup and view all the answers

<p>Cerebrospinal fluid (CSF) is a clear, colorless fluid that protects and supports the brain and spinal cord, acts as a shock absorber, and helps to circulate nutrients and remove waste products.</p> Signup and view all the answers

<p>The four ventricles of the brain are the two lateral ventricles, the third ventricle, and the fourth ventricle.</p> Signup and view all the answers

<p>The largest part of the brain is the cerebrum.</p> Signup and view all the answers

<p>The four lobes of the cerebrum are the frontal lobe, parietal lobe, temporal lobe, and occipital lobe.</p> Signup and view all the answers

<p>The cerebellum is responsible for coordinating movement, balance, and posture.</p> Signup and view all the answers

<p>The three parts of the brainstem are the midbrain, pons, and medulla oblongata.</p> Signup and view all the answers

<p>The thalamus is a relay center for sensory information, sending it to the appropriate areas of the cerebrum.</p> Signup and view all the answers

<p>The pituitary gland is a small, pea-shaped gland that releases hormones that regulate growth, reproduction, and other bodily functions.</p> Signup and view all the answers

<p>Cranial nerves are 12 pairs of nerves that originate from the brain and control sensory and motor functions in the head and neck.</p> Signup and view all the answers

<p>The spinal cord is a long, thin bundle of nerve tissue that connects the brain to the rest of the body, carrying sensory information to the brain and motor commands from the brain to the muscles.</p> Signup and view all the answers

<p>The two enlargements of the spinal cord are the cervical enlargement and the lumbar enlargement.</p> Signup and view all the answers

<p>The cauda equina is a collection of nerve roots that extend from the spinal cord inferiorly, resembling a horse's tail.</p> Signup and view all the answers

<p>The filum terminale is a thin strand of pia mater that anchors the spinal cord to the coccyx.</p> Signup and view all the answers

<p>False</p> Signup and view all the answers

<p>Gray matter in the spinal cord contains the cell bodies of neurons and is responsible for processing sensory information and generating motor commands.</p> Signup and view all the answers

<p>A reflex arc is a neural pathway that controls a reflex, a rapid, involuntary response to a stimulus.</p> Signup and view all the answers