Cardiopulmonary Anatomy & Physiology
7th Edition
ISBN: 9781337794909
Author: Des Jardins, Terry.
Publisher: Cengage Learning,
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Textbook Question
Chapter 12, Problem 8RQ
Which of the following means the ability to transmit
A. Conductivity
B. Excitability
C. Contractility
D. Automaticity
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Students have asked these similar questions
Which of the following statements describe a characteristic of the human body?
a. Under certain conditions your body’s resistance can be low as a few hundred ohms.
b. The lower the resistance of your body, the more current that can be forced through it by a given amount of voltage.
c. The resistance of your body is lower than the normal when you are wet.
d. All of the above.
EXPLAIN
What is the electrical current that travels along neurons called?
A. Neurotransmitter
B. Action potential
C. Contractions
D. Electromagnetic wave
Our nerve impulse travels from one neuron to the next in the form of.
a. chemical signal
b. electrical signal
c. electromagnetic signal
d. pressure signal
Chapter 12 Solutions
Cardiopulmonary Anatomy & Physiology
Ch. 12 - 1. Which of the following is the rapid upstroke in...Ch. 12 - Prob. 2RQCh. 12 - Prob. 3RQCh. 12 - Prob. 4RQCh. 12 - Which of the following slows the heart rate and AV...Ch. 12 - Prob. 6RQCh. 12 - Prob. 7RQCh. 12 - Which of the following means the ability to...Ch. 12 - An electrical difference across the fibers of the...Ch. 12 - Prob. 10RQ
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- A. the fact that one represents a depolarization and the other represents a hyperpolarization. B. the capacitive properties of the membrane. C. the difference in applied voltage.arrow_forwardThe two electrolytes most important in enabling nerves to respond to stimuli are? A. Chloride and sodium B. Phosphorous and calcium C. iron and calcium D. Potassium and sodiumarrow_forward• Bundles of neurons that carry information to and from the central nervous system are called A. Nerves B. Interneurons C. Myelin sheath D. Glia • The attraction of the opposite charges across the plasma membrane is a potential energy, the charge difference, or the voltage is called _______________. A. Summation B. Membrane potential C. Resting potential D. Depolarizationarrow_forward
- Which of the three types of nerves contains both sensory and motor neurons? a spinal cord b motor nerves c sensory nerves d mixed nervesarrow_forwardWhich of the following would most likely suppress an action potential in neurons? Select one: a. increased amount of ATP b. movement of chlorine down its concentration gradient c. active transport of chlorine d. opening of sodium channels e. closing calcium channels Clear my choicearrow_forwardWhich one of these is an example of an excitatory postynaptic potential in a typical neuron? a) A voltage change from -70mV to -70.5mV b) A voltage change from +35mV to 0MV c) A voltage change from 0mV to +0.35mV d) A voltage change from -69.5mV to -70mVarrow_forward
- Neuroglia (a) conduct electrical impulses, (b) are nerve stem cells, (c) are support cells that aid neurons, (d) are an abnormal growth of neural tissue.arrow_forwardhe rate of conduction of an action potential along a nerve fiber is affected by a range of things. Which of the following affects the rate of conduction? (can choose multiple answers) 1. Myelin 2. nerve diamter 3. nerve length 4. temperaturearrow_forwardA motor neuron: a) transmits nerve impulses to the brain. b) is very short. c) transmits nerve impulses out of the brain and spinal cord. d) transmits nerve impulses to muscles only. Use the illustration below to answer questions 7 and 8. 7. Which number represents a dendrite? a) 1 b)2 c)3 d)4 e)5 8. What number represents the myelin sheath? a)1 b)2 c)3 d)4 e)5 9. At rest, a neuron is: a) Polarized b) Depolarized c) Green 10. Certain phenomena can be observed in a person running. What causes the runner's breathing rate to increase. a) The cells produce more CO2. b) The cells make more urea. c) The cells release more energy. d) The cells have a greater need for glucose.arrow_forward
- Meningitis is a viral or bacterial infection of the brain. Which cell type is the first to have its function disrupted during meningitis? a. astrocytes b. microglia c. neurons d. satellite gliaarrow_forwardThe presence of an electrical gradient is responsible for both the resting membrane potential and the action potential in the neuron.a. In this case who is responsible for maintaining the electric gradient to produce a potential for the resting membrane?b. Explain what is meant by an electrical gradient in the context of a cell (neuron)!arrow_forwardAt rest, a neuron has a lower concentration of sodium than the surrounding fluid. When a neuron sends a signal, it opens sodium channels. What happens to the sodium when the sodium channels open? A. The sodium diffuses out of the cell. B. The sodium is pumped into the cell. C. The sodium is pumped out of the cell. D. The sodium diffuses into the cell.arrow_forward
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