ANATOMY AND PHYSIOLOGY
17th Edition
ISBN: 9781630180928
Author: OpenStax
Publisher: OPENSTAX C
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Chapter 15, Problem 3ILQ
Read this article (http://openstaxcollege.org/l/strokespell) to learn about a teenager who experiences a series of spells that suggest a stroke. He undergoes endless tests and seeks input from multiple doctors. In the end, one expert, one question, and a simple blood pressure cuff answers the question. Why would the heart have to beat faster when the teenager changes his body position from lying down to sitting, and then to standing?
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Mary is a 55-year old overweight woman who has poor diet and does not exercise. One day while walking up the stairs she felt sharp pain in the left side of her chest, neck and in left arm. Her doctor told her that she experienced heart pain (angina) due to possible heart problems and needs to get some test done. While she is waiting for the results of her tests Mary asks you why she was feeling pain in her arm and neck if the problem was with her heart. Explain using appropriate physiological and anatomical details.
List everything that would happen if the cardiac muscles turned into skeletal muscles.
A pithed frog in which the brain and spinal cord are severed is technically dead but some of
its organs such as heart, continue to function for some time. An experiment was performed
on a pithed frog. After recording the normal heartbeats (normal cardiogram or sinus rhythm),
a ligature (ie. tying) is applied between the sinus venosus and right auricle. (Sinus venosus
is the pacemaker in amphibian heart). It is the first ligature (I ligature). After a while, a second
ligature is applied between auricles and ventricle (II ligature). The heart rates record is shown
below. What can we learn from this experiment about the rhythmicity of our cardiac
muscle? List THREE points.
A
в
5 sec
5 sec
5 sec
I ligature
Il ligature
Chapter 15 Solutions
ANATOMY AND PHYSIOLOGY
Ch. 15 - Watch this video...Ch. 15 - Watch this video...Ch. 15 - Read this article...Ch. 15 - Watch this video...Ch. 15 - Watch this video...Ch. 15 - Watch this video...Ch. 15 - Which of these physiological changes would not be...Ch. 15 - Which type of fiber could be considered the...Ch. 15 - Which signaling molecule is most likely...Ch. 15 - Which of these cranial nerves contains...
Ch. 15 - Which of the following is not a target of a...Ch. 15 - Which of the following represents a sensory input...Ch. 15 - What is the term for a reflex that does not...Ch. 15 - What neurotransmitter will result in constriction...Ch. 15 - What gland produces a secretion that causes...Ch. 15 - Which of the following is an incorrect pairing?...Ch. 15 - Which of these locations in the forebrain is the...Ch. 15 - Which nerve projects to the hypothalamus to...Ch. 15 - What region of the limbic lobe is responsible for...Ch. 15 - What is another name for the preganglionic...Ch. 15 - What central fiber tract connects forebrain and...Ch. 15 - A drag that affects both divisions of the...Ch. 15 - A drug is called an agonist if it ________. blocks...Ch. 15 - Which type of drug would be an antidote to...Ch. 15 - Which kind of ding would have anti-anxiety...Ch. 15 - Which type of drug could be used to treat asthma...Ch. 15 - In the context of a lioness hunting on the...Ch. 15 - A target effector, such as the heart, receives...Ch. 15 - Damage to internal organs will present as pain...Ch. 15 - Medical practice is paying more attention to the...Ch. 15 - Horners syndrome is a condition that presents with...Ch. 15 - The cardiovascular center is responsible for...Ch. 15 - Why does smoking increase the risk of heart...Ch. 15 - Why might topical, cosmetic application of...
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