Lecture : Best ways Neuronal Physiology For biology

9 views12 pages

jaljeetsingh30895

16 Mar 2023

School

Maharshi Dayanand University - MDU

Department

Biology

Course

BIO CLASS 12TH

Professor

For unlimited access to Class Notes, a Class+ subscription is required.

Document Summary

Brain stem (2) autonomic nervous system (3) depression. Neuroglia cells:- the function of neuroglia cells is to ensure structural support, nourishment and neuron protection. There are five types of neuroglia cells: : oligodendrocytes, astrocytes, microglia schwann. Ependyma (1)neurons :- neurons are the fundamental functional units of the nervous system. They have several roles: : react to chemical and sensory stimuli, conduct the impulses, emit specific chemical regulators . The cell body: it is composed of the nucleus (containing dna and rna) and the cell membrane it also contains cytoplasm, endoplasmic reticulum, nissl bodies, golgi apparatus, mitochondria, lysosomes and neurotubules. The cell processes are composed of the dendrites and cell axon. The dendrites carry impulses from another neuron to the cell body and impulses then travel down the axon. Axons can either be myelinated (an insulating sheath that aids impulse conduction) or nmyelinated. The neuron undergoes a variety of changes in order to transmit an impulse.

Related Questions

Animal Physiology-

1. Our case study included a variety of reflexes, some of which were autonomic reflexes. This means that motoroutput occurred at the level of cardiac muscle, smooth muscle, or secretory epithelial cells. Autonomic reflexescan be categorized according to the location where motor information exits the CNS. Consequently, thepupillary light reflex is a: (a) parasympathetic reflex (b) sympathetic reflex

11. Each retina contains a layer of ganglion cells. Axons from these neurons project into two regions on eachside of the body midline. Axons that enable vision project into the: (a) mibrain (b) thalamus (c) sensory cortex

13. Where does central integration occur for reflex turning of the head and the pupillary light reflex? (a) sensory cortex (b) midbrain (c) brainstem

16. Is every reflex associated with the head an autonomic reflex? yes or no

17. Is reflex turning of the head an autonomic reflex? yes or no

20. Sympathetic motor output exits the CNS only at the level of the: (a) brainstem and pelvic cord (b) thoracolumbar spinal cord (c) brainstem and cervical spinal cord

22. How many types of motor nuclei are found within the cord? (a) two, i.e. motor and autonomic (b) three, i.e. motor, sympathetic, and parasympathetic

23. How many motor nuclei are found at the level of the thoracolumbar cord? (a) four (b) two

31. Neurons within the intermediolateral nuclei are innervated by axons that project through the bulbospinalfiber tracts. These tracts originate within the: (a) motor cortex (b) midbrain (c) brainstem

33. Are the left and right paravertebral ganglion chains found along the length of the spinal cord? yes or no

magentatrout753

Provide an overview of key age-related physiological changes by discussing normal and abnormal changes within neurons.

Nerve cells that conduct messages are called (1) ____. (2) _____ cells, which support and nurture the activities of neurons, make up less than half the volume of the nervous system. (3) _______ neurons respond to specific kinds of environmental stimuli, (4) ______ connect different neurons in the spinal cord and brain, and (5) ______ neurons are linked with muscles or glands. All neurons have a (6) _______ ________ that contains the nucleus and the metabolic means to carry out protein synthesis. (7) _______ are short, slender extensions of the (6), and together these two neuronal parts are the neuronsâ âinput zoneâ for receiving (8) _____. The (9) _____ is a single long, cylindrical extension away form the (10) ______; in motor neurons, the (11) ______ has finely branched (12) ________ that terminate on muscle or gland cells and are âoutput zones,â where messages are sent on to other cells. A neuron at rest establishes unequal electric charges across its plasma membrane, and a(n) (13) ____ ____ is maintained. Another name for (13) is the (14) _____ _____ _____; it represents an ability for the membrane to be disturbed. Weak disturbances of the neuronal membrane might set off only slight changes across a small patch, but strong disturbances can cause a(n) (15) _______ ______, which is an abrupt, short-lived reversal in the polarity of charge across the plasma membrane of the neuron. For a fraction of a second, the cytoplasmic side of a bit of membrane becomes positive with respect to the outside. The (16) ______ that travels along the neural membrane is nothing more than short-lived changes in the membrane potential. A. Neurons H. Sensory B. Motor I. Endings C. Interneurons J. Disturbance D. Cell body K. Signals (stimuli) E. Axon L. Voltage differential F. Dendrites M. Resting membrane potential G. Neuroglial N. Action potential

azureelk922

Lecture : Best ways Neuronal Physiology For biology

Document Summary

Get access

Related Documents

NURS140 Lecture Notes - Lecture 5: Lumbosacral Plexus, Cervical Plexus, Sacral Plexus

PSYC 3307 Lecture Notes - Lecture 1: Basal Ganglia, Brainstem, Ependyma

BIPN 150 Lecture Notes - Lecture 12: Tectospinal Tract, Rubrospinal Tract, Vestibulospinal Tract

Related Questions