Human Anatomy & Physiology
1st Edition
ISBN: 9780805382952
Author: Erin C. Amerman
Publisher: PEARSON
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Textbook Question
Chapter 17, Problem 18CYR
Which of the following statements is false?
a. The sympathetic nervous system releases epinephrine and norepinephrine, which are positive chronotropic and inotropic agents.
b. The endocrine system regulates cardiac output through chronotropic and inotropic hormones and through hormones that regulate water balance.
c. The parasympathetic nervous system releases acetylcholine and epinephrine, which are strongly negative inotropic agents.
d. Factors such as electrolyte concentrations, body temperature, and age all affect cardiac output.
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Catecholamine (Epinephrine)-blockers are often used as a treatment to dilate blood
vessels and therefore decrease arterial blood pressure (as a treatment for
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normally controlling the diameter of the arterial blood vessels is the:
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d. Parasympathetic nervous system
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A. Contriction of skeletal muscle blood and vasodilation of renla blood
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C. Inhibition of heart rate and amooth muscles of the urinary bladder
Excitation of the smooth muscles of the urinary bladder and Gl tract
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a. efficient removal of waste products by blood systems
b. rigidity and likelihood of stroke
c. most large and charged molecules cannot move from the blood to the brain
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What does it mean to say that acetylcholine exerts ionotropic effects?
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Chapter 17 Solutions
Human Anatomy & Physiology
Ch. 17.1 - Where is the heart located, and how large is it?Ch. 17.1 - What are the hearts upper and lower chambers...Ch. 17.1 - 3. From what sources does blood flow into the...Ch. 17.1 - 4. Which side of the heart is considered the...Ch. 17.1 - Which side of the heart is considered the systemic...Ch. 17.2 - Prob. 1QCCh. 17.2 - Prob. 2QCCh. 17.2 - 3. What are the three layers of the heart wall,...Ch. 17.2 - 4. What are the four main great vessels? From...Ch. 17.2 - How do the right and left ventricles differ in...
Ch. 17.2 - 6. Why do you think it is important to ensure via...Ch. 17.2 - 7. What is the overall pathway of blood flow...Ch. 17.2 - Prob. 4QCCh. 17.2 - Prob. 5QCCh. 17.2 - Prob. 6QCCh. 17.3 - How do pacemaker and contractile cells differ?...Ch. 17.3 - 2. What are intercalated discs? What is their...Ch. 17.3 - Prob. 5QCCh. 17.3 - Prob. 6QCCh. 17.3 - What is the sequence of events of a contractile...Ch. 17.3 - How does the refractory period of cardiac muscle...Ch. 17.3 - 7. What does an ECG record?
Ch. 17.3 - What are the five waves in an ECG, and what do...Ch. 17.4 - What causes the heart sounds S1 and S2?Ch. 17.4 - Prob. 2QCCh. 17.4 - Prob. 3QCCh. 17.4 - Is the end-diastolic or the end-systolic volume of...Ch. 17.4 - 5. Walk through the mechanical events of the...Ch. 17.4 - How do the ECG waves correlate with each part of...Ch. 17.4 - 7. How does the left ventricular pressure...Ch. 17.5 - Prob. 1QCCh. 17.5 - What is cardiac output? How does it relate to...Ch. 17.5 - Prob. 3QCCh. 17.5 - What is the Frank-Starling law, and how does it...Ch. 17.5 - What is a chronotropic agent?Ch. 17.5 - Prob. 6QCCh. 17.5 - 7. What effects does the parasympathetic nervous...Ch. 17.5 - How would a hormone that decreases the amount of...Ch. 17.5 - How is heart failure defined?Ch. 17 - 1. Mark the following statements as true or false....Ch. 17 - 2. The pericardial cavity is located between:
a....Ch. 17 - 3. Which of the following statements is true?
a....Ch. 17 - Match the following terms with the correct...Ch. 17 - Fill in the blanks: The coronary arteries are the...Ch. 17 - 6. How do pacemaker cardiac muscle cells differ...Ch. 17 - 7. Cardiac muscle cells are joined by structures...Ch. 17 - Prob. 8CYRCh. 17 - Prob. 9CYRCh. 17 - 10. The _________is the primary pacemaker of the...Ch. 17 - The AV node delay: a. allows the atria and...Ch. 17 - Explain what each of the following terms...Ch. 17 - 13. Mark the following statements as true or...Ch. 17 - Prob. 14CYRCh. 17 - 15. Fill in the blanks: The first heart sound is...Ch. 17 - Cardiac output is equal to: a. end-diastolic...Ch. 17 - Prob. 17CYRCh. 17 - 18. Which of the following statements is false?
a....Ch. 17 - 1. A birth defect called transposition of great...Ch. 17 - 2. Predict which would be more damaging to...Ch. 17 - 3. When the SA node doesn’t function properly, the...Ch. 17 - Prob. 4CYUCh. 17 - Prob. 1AYKACh. 17 - You are a nursing student in a hospital, and a...Ch. 17 - Prob. 3AYKACh. 17 - Prob. 4AYKB
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- The atrioventricular node is located in the: A. right atrium B. right ventricle C. septum between the right and left atrium D. juncture between the right atrium and ventricle Preganglionic parasympathetic neurons release NT that binds to: A. nicotinic acetylcholine ligand-gated receptors B. muscarinic acetylcholine GPCRs C. beta-1 norepinephrine GPCRs D. norepinephrine ligand-gated receptorsarrow_forwardWhich one of the following statements about gap junctions or electrical synapses is incorrect? A. Abundant gap junctions between cardiac muscle cells allow coordinated waves of contraction to spread through the heart muscle. B. Synaptic delays at electrical synapses are shorter than synaptic delays at chemical synapses. C. Gap junctions at electrical synapses are formed from proteins made in both the presynaptic and postsynaptic cells. D. Electrical synapses can be either excitatory or inhibitory. E. Electrical synapses are inherently bidirectional, i.e., current can spread between two coupled cells in either direction Please give me the correct answer quickly I will give you upvotearrow_forwardIncreased action potentials from the sympathetic nervous system would cause which of the following? a. release of acetylcholine at sinuatrial nodal cells b. release of acetylcholine at cardiac muscle cells c. increased strength of contraction d. decreased heart ratearrow_forward
- The sympathetic nervous system that acts in the same manner as epinephrine (adrenaline) does the following:a. increases the heart rate and dilates the pupils.b. increases the heart rate and constricts the pupils.c. slows the heart rate and dilates the pupils.d. slows the heart rate and constricts the pupils.arrow_forwardWhich of the following is accurate about a beta receptor? a. It binds acetylcholine. b. Its effects are excitatory (stimulatory) only. c. It causes general vasoconstriction. d. It increases heart rate.arrow_forwardNicotinic receptors bind A. acetylcholine and allow chloride ions to exit the cell. B. acetylcholine and allow sodium ions to enter the cell. C. muscarine and increase the contractility of intestinal muscle. D. norepinephrine and can either stimulate or inhibit the cell. E. norepinephrine and allow potassium entry, thereby exciting the cell.arrow_forward
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- Calcium is vital for bone growth, but it's also an important part of neural transmission. The role of calcium in neural transmission is that it enables the axon terminals to effectively Select one: a. secrete neurotransmitter into the synapse via exocytosis b. reabsorb neurotransmitter from the synapse via endocytosis after an action potential c. reabsorb neurotransmitter from the synapse via exocytosis after an action potential d. secrete neurotransmitter into the synapse via endocytosisarrow_forwardWhich one is correct about the AP conduction velocity of nerve fiber A. Increase of the temperature within physiological limit will increase the conduction velocity. B. The fiber with big diameter always conducts faster. C. The increase of extracellular K+ will increase the conduction velocity D. Myelination of nerve fiber always decreases the conduction velocity. E. Anesthesia do not influence the conduction velocity.arrow_forwardThe sympathetic postganglionic neurons release only norepinephrine while the adrenal medulla secretes mainly epinephrine (80%) and a small amount of norepinephrine (20%). The sympathetic postganglionic neurons do not secrete epinephrine because; Group of answer choices a. Epinephrine is not as widely used in the nervous system as norepinephrine b. Phenylethanolamine-N-methyltransferase (PNMT) which converts norepinephrine to epinephrine is present in the adrenal medulla, but not in sympathetic postganglionic adrenergic neurons c. Acetylcholine which stimulates the secretion of epinephrine does not act on postganglionic neurons d. Dopamine beta hydroxylase in hyperactive in the adrenal medullaarrow_forward
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