The Nervous System Organization

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which of the following is a function of the Nervous System?

  • Only Production of Hormones
  • Only Regulating Body Temperature
  • Sensory, Integrative, and Motor (correct)
  • Only Growth and Development

What is the main function of Neuroglia cells?

  • To support, nourish, and protect (correct)
  • To produce hormones
  • To transmit signals
  • To receive chemical messages

What is the structure where chemical messages are received in a neuron?

  • Cell Body
  • Dendrite (correct)
  • Axon
  • Nucleus

What is the Central Nervous System (CNS) composed of?

<p>Brain and spinal cord (D)</p> Signup and view all the answers

What is the function of the Integrative function of the Nervous System?

<p>To process and analyze sensory information (D)</p> Signup and view all the answers

What is the primary function of the axon?

<p>To transmit information away from the cell body (D)</p> Signup and view all the answers

What is the term for the multilayered lipid and protein covering that speeds up signal conduction?

<p>Myelin (D)</p> Signup and view all the answers

What type of neuron has several dendrites and one axon?

<p>Multipolar (C)</p> Signup and view all the answers

What is the term for the electrical signal that travels along the cell membrane of a neuron?

<p>Action Potential (A)</p> Signup and view all the answers

What type of neuron is responsible for transmitting information from sensory receptors to the CNS?

<p>Sensory Neuron (A)</p> Signup and view all the answers

What is the term for the swollen ends of some axon terminals?

<p>Synaptic End Bulb (B)</p> Signup and view all the answers

What is the primary function of the axons in the sensory tracts of the spinal cord?

<p>Conducting action potentials toward the brain (D)</p> Signup and view all the answers

Which part of the brain stem contains centres for the control of heart rate and blood pressure?

<p>Medulla oblongata (B)</p> Signup and view all the answers

What is the name of the region in the spinal cord that contains sympathetic nuclei?

<p>Lateral horn (C)</p> Signup and view all the answers

What is the primary function of the motor tracts in the spinal cord?

<p>Conducting action potentials away from the brain (A)</p> Signup and view all the answers

Which part of the brain is continuous with the spinal cord?

<p>Brain stem (B)</p> Signup and view all the answers

What is the name of the structure that extends through the brain stem?

<p>Reticular formation (D)</p> Signup and view all the answers

What is the characteristic of C1-C7 spinal nerves?

<p>They exit the spine above their corresponding vertebra (D)</p> Signup and view all the answers

What is the function of the posterior root ganglion?

<p>Contain cell bodies of sensory neurons (A)</p> Signup and view all the answers

Which of the following is NOT a subdivision of the PNS?

<p>Central Nervous System (CNS) (B)</p> Signup and view all the answers

What is the function of the anterior root?

<p>Bundle of motor axons (C)</p> Signup and view all the answers

What is the outermost layer of connective tissue that covers the spinal nerve?

<p>Epineurium (A)</p> Signup and view all the answers

Which spinal nerve exits between C7 and T1 vertebrae?

<p>C8 (C)</p> Signup and view all the answers

What is the primary function of a peripheral sensory receptor?

<p>To detect stimuli and transmit signals to the dorsal root ganglion (B)</p> Signup and view all the answers

What happens to the axon after it enters the dorsal horn?

<p>It synapses with an interneuron which then synapses with a motor neuron (D)</p> Signup and view all the answers

What type of motor output involves axons from the motor tract synapsing with somatic motor neurons?

<p>Somatic motor output (B)</p> Signup and view all the answers

Which of the following is NOT a pathway for sensory input?

<p>Through the ventral horn to the brain (B)</p> Signup and view all the answers

What is the function of the axon that crosses over into the white matter of the opposite side?

<p>To travel up to the brain as part of a sensory tract (D)</p> Signup and view all the answers

What is the destination of the axons that travel through the lateral gray horn and the anterior root?

<p>Spinal nerve (A)</p> Signup and view all the answers

What is the function of an axon in a neuron?

<p>To transmit information away from the cell body (B)</p> Signup and view all the answers

What is the term for neurons that have several dendrites and one axon?

<p>Multipolar neurons (D)</p> Signup and view all the answers

What is the function of myelin in neurons?

<p>To speed up signal conduction (A)</p> Signup and view all the answers

What is the term for the electrical signal that travels along the cell membrane of a neuron?

<p>Action potential (B)</p> Signup and view all the answers

What is the function of sensory neurons?

<p>To transmit information from sensory receptors to the CNS (B)</p> Signup and view all the answers

What is the term for neurons that have one main dendrite and one axon?

<p>Bipolar neurons (B)</p> Signup and view all the answers

What is the primary function of the basal ganglia?

<p>To control subconscious contraction of skeletal muscles (D)</p> Signup and view all the answers

Which part of the limbic system is involved in emotional function, especially fear?

<p>Amygdala (D)</p> Signup and view all the answers

What is the outermost layer of the meninges that covers the brain and spinal cord?

<p>Dura mater (D)</p> Signup and view all the answers

How many pairs of spinal nerves are there in the human body?

<p>31 (D)</p> Signup and view all the answers

What is the function of the hippocampus in the limbic system?

<p>To convert short-term memory to long-term memory (D)</p> Signup and view all the answers

What is the name of the space between the dura mater and the arachnoid membrane?

<p>Subdural space (B)</p> Signup and view all the answers

What is the primary function of the Autonomic Nervous System (ANS)?

<p>To monitor and control automatic body functions, such as heart rate and digestion (B)</p> Signup and view all the answers

What is the sympathetic nervous system (SyNS) responsible for?

<p>Initiating the 'fight or flight' response (B)</p> Signup and view all the answers

What is the primary function of the parasympathetic nervous system (PaNS)?

<p>To promote rest and digestion (A)</p> Signup and view all the answers

What is the term for the balance between sympathetic and parasympathetic activity?

<p>Autonomic tone (A)</p> Signup and view all the answers

Which of the following structures receives only sympathetic innervation?

<p>Sweat glands and arrector pilli (A)</p> Signup and view all the answers

What is the function of the Enteric Nervous System (ENS)?

<p>To monitor and control gastrointestinal functions (A)</p> Signup and view all the answers

What is the function of the synaptic cleft in a chemical synapse?

<p>To separate the pre-synaptic neuron from the post-synaptic neuron (B)</p> Signup and view all the answers

What type of synapse is faster and allows for synchronization of function?

<p>Electrical synapse (D)</p> Signup and view all the answers

What is the function of oligodendrocytes in the CNS?

<p>To form the myelin sheath of CNS neurons (C)</p> Signup and view all the answers

What is the term for the cluster of neuronal cell bodies in the PNS?

<p>Ganglion (B)</p> Signup and view all the answers

What is the function of astrocytes in the CNS?

<p>To help form the blood-brain barrier (D)</p> Signup and view all the answers

What is the term for the clear, colorless fluid that circulates around the brain and spinal cord?

<p>Cerebrospinal fluid (B)</p> Signup and view all the answers

What is the function of microglia in the CNS?

<p>To phagocytize microbes (C)</p> Signup and view all the answers

What is the term for the bundle of axons in the CNS?

<p>Tract (B)</p> Signup and view all the answers

What is the function of the cauda equina in the spinal cord?

<p>To contain the roots of the spinal nerves (A)</p> Signup and view all the answers

What is the term for the white matter surrounding the grey matter in the spinal cord?

<p>White matter (B)</p> Signup and view all the answers

What is the destination of the sensory input that travels up to the brain as part of a sensory tract?

<p>Brain (B)</p> Signup and view all the answers

What is the function of the axon that enters the dorsal horn and synapses with an interneuron?

<p>Initiating a spinal reflex (B)</p> Signup and view all the answers

What is the route taken by axons that synapse with somatic motor neurons in the ventral horn?

<p>Ventral root to spinal nerve to skeletal muscle (C)</p> Signup and view all the answers

What type of motor output involves axons from the motor tract synapsing with autonomic motor neurons in the lateral horn?

<p>Autonomic motor output (B)</p> Signup and view all the answers

What is the destination of the axons that travel through the lateral gray horn and the anterior root?

<p>Spinal nerve (B)</p> Signup and view all the answers

What is the function of the dorsal horn in the spinal cord?

<p>Modulation of spinal reflexes (A)</p> Signup and view all the answers

Flashcards are hidden until you start studying

Related Documents

T1 Phys - Topic 5 - Nervous - Apr 2020 PDF

More Like This

Use Quizgecko on...
Browser
Open
Browser
Browser