Excitable cells Study guides, Class notes & Summaries

Steps of action potentiial Correct Answer Process by which excitable cells transmit information to one another Occurs mostly in nerve and muscle cells Action potential altered by calcium imbalance Correct Answer Hyopcalcemia: increases cell permeability to sodium -> progressive depolarization —> RMP and threshold potential to be closer —> easier to activate action potential -> cells are more excitable -> tetany, hyperflexia, circumoral pareshesias, seizure, dysrhythmias ...

Barkley PNP DRT 2 Questions And Answers 2023 The parents of a 2 month old male bring him to the emergency department. His parens info you the he has a history of iiirtibility. He has developed recurrent vomitng and choking while feeding. You ask the parens about the child's stools, to which they respond by saying that he has been going less frequently, but there are no noticeable changes in the stool itself. Of the following choices, which is the most likely cause? A. Pyloric stenosis B. Menin...

SCRN Review (CNRN Part 1) Exam 2023. By definition, what is a neuron? - Answer- An excitable cell that is capable of conducting electrical signals and receive stimuli from the central and peripheral fields What are neuroglia? - Answer- Non-excitable cells with supportive and protective functions What are the two cell categories in the nervous system? - Answer- Neurons (excitable) Neuroglia (nonexcitable) What part of the neuron receives signals? - Answer- Dendrites What part of the neuro...

APHY 101 Ch 1: An Introduction to the Human Body Ivy Tech Latest 2024 Graded A+ Anatomy Studies the structure of body parts and their relationships to one another. Physiology Concerns the function of the body, in other words, how the body parts work and carry out their life sustaining activities. Often focuses on cellular and molecular level. Gross or Macroscopic Anatomy Study of large body structures visible to naked eye (ex: heart, lungs, kidneys). Regional Anatomy All structures in a particul...

Excitability correct answers the ability of non-pacemaker heart cells to respond to an electrical impulse that begins in pacemaker cells. Depolarization correct answers occurs when the normally negatively charged cells within the heart muscle develop a positive charge. Conductivity correct answers the ability to send an electrical stimulus from cell membrane to cell membrane. As a result, excitable cells depolarize in rapid succession from cell to cell until all cells have depolarized. Ex:...

Ovarian cancer site of metastasis? - AnswerPeritoneal surfaces, omentum (fold of peritoneum connecting the stomach with other abdominal organs), *liver* The increased NADH/NAD+ ratio in the liver from ethanol causes: - Answer1. Pyruvate --> lactic acid, causing lactic acidosis 2. Oxaloacetate --> malate. This prevents gluconeogenesis and leads to hypoglycemia 3. Glyceraldehyde-3-phosphate --> glycerol 3- phosphate and combines with fatty acids to form triglycerides in the liver, k...

Anatomy and physiology the unity of form and function chapter 5 Questions And Answers Epithelial tissue - ANS-Tissue composed of layers of closely spaced cells that cover organ surfaces from glands and serve for protection, secretion and absorption Connective tissue - ANS-Tissue with usually more matrix than cell volume often specialized to support bind and protect organs Nervous tissue - ANS-Tissue containing excitable cells specialized for rapid transmission of coded information to o...

Anatomy and Physiology LAB exam connective tissues are comprised of three major features: cells, fibres and ground substance cartilage resilient, smooth connective tissue found at the end of long bones, the tips of nose, trachea etc. the three principal types of cartilage fibro, elastic and hyaline what happens while cartilage grows? chondroblasts become trapped in the marix they produce is spaces called lacunae. once tissue is formed, the chondroblasts mature into...

Three fundamental physiological properties of neurons, or nerve cells - Answer-Excitability Conductivity Secretion Excitability - Answer-the ability of a cell to respond to a stimulus, especially the ability of nerve and muscle cells to produce membrane voltage changes in response to stimuli; also called irritability -all cells are excitable -nerve cells are excitable to the highest degree Conductivity - Answer-Neurons respond to stimuli by producing electrical signals that are quickly c...

The parents of a 2 month old male bring him to the emergency department. His parens info you the he has a history of iiirtibility. He has developed recurrent vomitng and choking while feeding. You ask the parens about the child's stools, to which they respond by saying that he has been going less frequently, but there are no noticeable changes in the stool itself. Of the following choices, which is the most likely cause? A. Pyloric stenosis B. Meningitis C. Hirschprungs disease D. Gastroe...