Human Anatomy, First Edition McKinley&O'Loughlin
... Myelination is the process by which part of an axon is wrapped with a myelin sheath, a protective fatty coating that gives it glossywhite appearance. The myelin sheath supports, protects, and insulates an axon. ...
... Myelination is the process by which part of an axon is wrapped with a myelin sheath, a protective fatty coating that gives it glossywhite appearance. The myelin sheath supports, protects, and insulates an axon. ...
The Nerve Impulse
... is regenerated by a chain of positively charged ion pushed along by the previous segment. ...
... is regenerated by a chain of positively charged ion pushed along by the previous segment. ...
The Nerve Impulse
... is regenerated by a chain of positively charged ion pushed along by the previous segment. ...
... is regenerated by a chain of positively charged ion pushed along by the previous segment. ...
Biology Notes: The Nervous System and Neurons
... ReView (at the end of the PowerPoint you should be able to answer these questions) 1. What is the function of the nervous system? 2. List the 4 main parts and describe the purpose of the 4 main parts of a neuron. 3. The nervous system is divided into 2 parts. What are they and what do they incl ...
... ReView (at the end of the PowerPoint you should be able to answer these questions) 1. What is the function of the nervous system? 2. List the 4 main parts and describe the purpose of the 4 main parts of a neuron. 3. The nervous system is divided into 2 parts. What are they and what do they incl ...
Biology 118 - Exam 2
... 26. The brain grows most rapidly between the ages of _______ years; this growth is driven by the rapid production of ______. a. 0 to 3 – CSF b. 5 to 10 - myelin c. 0 to 3 – new neurons * d. 5-10 – meninges 27. Vitamin _____ has been added to breads and cereals since 1998 in the U.S. to reduce the r ...
... 26. The brain grows most rapidly between the ages of _______ years; this growth is driven by the rapid production of ______. a. 0 to 3 – CSF b. 5 to 10 - myelin c. 0 to 3 – new neurons * d. 5-10 – meninges 27. Vitamin _____ has been added to breads and cereals since 1998 in the U.S. to reduce the r ...
sympathetic and parasympathetic systems
... - an action potential can only be initiated at the dendrite end of a nerve fiber (receptor or synapse) Thus the impulse can only travel away from the receptor towards the cell body. It never goes in the opposite direction (although it can be made to do so artificially) ALL OR NONE - action potential ...
... - an action potential can only be initiated at the dendrite end of a nerve fiber (receptor or synapse) Thus the impulse can only travel away from the receptor towards the cell body. It never goes in the opposite direction (although it can be made to do so artificially) ALL OR NONE - action potential ...
File
... There are different conditions in which a neuron can be found during an action potential: 1. Resting Potential – Na+ ions are in equilibrium with K+ ions across the axonal membrane, resulting in a net positive charge outside and a negative charge inside the neuron. 2. Depolarization – an active tran ...
... There are different conditions in which a neuron can be found during an action potential: 1. Resting Potential – Na+ ions are in equilibrium with K+ ions across the axonal membrane, resulting in a net positive charge outside and a negative charge inside the neuron. 2. Depolarization – an active tran ...
CH 3 Practice Test
... Johnny was awakened by a loud, crashing sound in the middle of the night. He was frightened and he jumped out of bed to investigate. Johnny realized that the loud sound was just his cat playing around in the living room. Needless to say, Johnny was extremely relieved. Which subdivision of the nervou ...
... Johnny was awakened by a loud, crashing sound in the middle of the night. He was frightened and he jumped out of bed to investigate. Johnny realized that the loud sound was just his cat playing around in the living room. Needless to say, Johnny was extremely relieved. Which subdivision of the nervou ...
AP Ch. 9 Nervous System Part 1 Worksheets
... 16. There are 31 pairs of ____________________________ nerves. 17. These types of neurotransmitters increase membrane permeability, thus increasing the chance that threshold will be achieved. ______________________________ 18. When a threshold is achieved, an event called the __________________ pote ...
... 16. There are 31 pairs of ____________________________ nerves. 17. These types of neurotransmitters increase membrane permeability, thus increasing the chance that threshold will be achieved. ______________________________ 18. When a threshold is achieved, an event called the __________________ pote ...
Chapter 48: Neurons, Synapses, and Signaling Reading Guide 48.1
... 6. What is indicated by the red arrows in Figure 48.4? 7. What are glial cells? 48.2 Ion pumps and ion channels maintain the resting potential of a neuron In this section you will need to recall information about the structure and function of the plasma membrane. Ions are not able to diffuse freely ...
... 6. What is indicated by the red arrows in Figure 48.4? 7. What are glial cells? 48.2 Ion pumps and ion channels maintain the resting potential of a neuron In this section you will need to recall information about the structure and function of the plasma membrane. Ions are not able to diffuse freely ...
Chapter 48: Neurons, Synapses, and Signaling Reading Guide 48.1
... 6. What is indicated by the red arrows in Figure 48.4? 7. What are glial cells? 48.2 Ion pumps and ion channels maintain the resting potential of a neuron In this section you will need to recall information about the structure and function of the plasma membrane. Ions are not able to diffuse freely ...
... 6. What is indicated by the red arrows in Figure 48.4? 7. What are glial cells? 48.2 Ion pumps and ion channels maintain the resting potential of a neuron In this section you will need to recall information about the structure and function of the plasma membrane. Ions are not able to diffuse freely ...
Leaving Certificate Biology Photosynthesis Quiz
... A neuron that carries impulses from receptors to the CNS is known as a … ...
... A neuron that carries impulses from receptors to the CNS is known as a … ...
structure and function of the neurologic system
... • Proximal to injury, see projection of new neurofibriles – Neurilemma (membrane that surrounds the myelin sheath) acts as guide ...
... • Proximal to injury, see projection of new neurofibriles – Neurilemma (membrane that surrounds the myelin sheath) acts as guide ...
The Nervous System
... •These are the suport cells in the peripheral nervous system. •Schwann cells provide the myelin sheath for peripheral axons. •Satellite cells serve a slightly similar function to astrocytes, supporting the cell bodies of peripheral neurons. ...
... •These are the suport cells in the peripheral nervous system. •Schwann cells provide the myelin sheath for peripheral axons. •Satellite cells serve a slightly similar function to astrocytes, supporting the cell bodies of peripheral neurons. ...
Nervous System
... Transmission of a nerve signal Neuron has similar system protein channels are set up once first one is opened, the rest open in succession ...
... Transmission of a nerve signal Neuron has similar system protein channels are set up once first one is opened, the rest open in succession ...
Nervous Tissue - MrsSconyersAnatomy
... Novacaine or Lidocaine Block the opening of Na+ channels The nerve impulse can’t go past the blocked region – CNS never gets the message that there is pain ...
... Novacaine or Lidocaine Block the opening of Na+ channels The nerve impulse can’t go past the blocked region – CNS never gets the message that there is pain ...
Notes to Introduction
... the cell body. 2 types of transport • "slow" axonal transport: goes only one way ( body to axon) • "fast" axonal transport : goes both ways and uses "molecular" motors ( ATP dependent "motor" proteins called kine sin ) ...
... the cell body. 2 types of transport • "slow" axonal transport: goes only one way ( body to axon) • "fast" axonal transport : goes both ways and uses "molecular" motors ( ATP dependent "motor" proteins called kine sin ) ...
neuron
... • Neurons may have a single axon or branching axons • The end of an axon is called the axon terminal, which may contact and communicate with a muscle cell, a gland cell or another neuron • Most axons are covered with a lipid layer called the myelin sheath • The myelin sheath speeds up transmission o ...
... • Neurons may have a single axon or branching axons • The end of an axon is called the axon terminal, which may contact and communicate with a muscle cell, a gland cell or another neuron • Most axons are covered with a lipid layer called the myelin sheath • The myelin sheath speeds up transmission o ...
Chapter 3 - Morgan Community College
... surface & is found in clusters called nuclei inside the CNS ...
... surface & is found in clusters called nuclei inside the CNS ...
Sending Signals Notes
... • When an impulse reaches the Axon Terminal, dozen of vesicles fuse with the cell membrane and discharge the Neurotransmitter into the Synaptic Cleft (GAP). • The molecules of the neurotransmitter diffuse across the gap and attach themselves to SPECIAL RECEPTORS on the membrane of the neuron recei ...
... • When an impulse reaches the Axon Terminal, dozen of vesicles fuse with the cell membrane and discharge the Neurotransmitter into the Synaptic Cleft (GAP). • The molecules of the neurotransmitter diffuse across the gap and attach themselves to SPECIAL RECEPTORS on the membrane of the neuron recei ...
6.5 Nerves, Hormones and Homeostasis
... • sodium ion channels shut; • potassium ion channels open; • potassium ions rush out; • helping to restore polarized state of membrane; • sodium-potassium pumps maintain polarity; • process repeated along the length of neuron / sodium ions diffuse between region with an action potential and the regi ...
... • sodium ion channels shut; • potassium ion channels open; • potassium ions rush out; • helping to restore polarized state of membrane; • sodium-potassium pumps maintain polarity; • process repeated along the length of neuron / sodium ions diffuse between region with an action potential and the regi ...
Multiple Choice: Choose the one best answer to each question
... 31) 5 points: How do mitochondria produce ATP from ADP, Pi and the NADH and FADH2 generated in the question above? You will need to indicate/name all enzymes, proton gradients, and enzyme complexes. A sketch of the mitochondria will also probably be needed to answer this question. ...
... 31) 5 points: How do mitochondria produce ATP from ADP, Pi and the NADH and FADH2 generated in the question above? You will need to indicate/name all enzymes, proton gradients, and enzyme complexes. A sketch of the mitochondria will also probably be needed to answer this question. ...
Ch 49 Pract Test Nervous System
... Tolerance means that decreasing amounts of a drug are needed to be effective. d. A lethal dose is a dose that results in death. ...
... Tolerance means that decreasing amounts of a drug are needed to be effective. d. A lethal dose is a dose that results in death. ...
Chapter 48 Worksheet
... 1. The part of a neuron that carries nerve impulses toward the cell body is called _____. a. a nerve b. white matter c. a neurotransmitter d. a dendrite e. an axon 2. Which one of the following statements is not true about the resting potential? a. The neuron's plasma membrane is much more permeabl ...
... 1. The part of a neuron that carries nerve impulses toward the cell body is called _____. a. a nerve b. white matter c. a neurotransmitter d. a dendrite e. an axon 2. Which one of the following statements is not true about the resting potential? a. The neuron's plasma membrane is much more permeabl ...
Node of Ranvier
The nodes of Ranvier also known as myelin sheath gaps, are the gaps (approximately 1 micrometer in length) formed between the myelin sheaths generated by different cells. A myelin sheath is a many-layered coating, largely composed of a fatty substance called myelin, that wraps around the axon of a neuron and very efficiently insulates it. At nodes of Ranvier, the axonal membrane is uninsulated and, therefore, capable of generating electrical activity.