Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 53.2, Problem 1EQ
Summary Introduction
To propose:
A hypothesis to explain why the blood pressure of dogs eventually returned to normal after standing up even after denervation of carotid and aortic baroreceptors.
Introduction:
The baroreceptors present in the blood vessels help to determine the blood pressure. The pressure of the blood is always maintained to supply oxygen to the bloodand remove carbon dioxide from it. The removal of these receptors can disturb the pressure maintaining homeostasis mechanism of the body.
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ERCISE 36 Electrical Activity of the Heart
Use this grid to graph the heart rates observed after exercise. Be sure to label your graph completely and accurately.
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Put in Order (rearrange these heart structures in the order through which
electrical signals are conducted in a single cardiac cycle)
Put in Order
1.
atrial myocardium
AV bundle branches
nim
2.
AV bundle
AV node
subendocardial (Purkinje) fibers
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3.
4.
5.
ventricular myocardium
6.
Fill-in (complete each statement with the correct term)
7.
1. Relaxation of a heart chamber is called _?_.
2. Contraction of a heart chamber is called _?_.
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5. ? is the condition of elevated heart rate.
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1.
2.
3.
4.
5.
a 0010 bu Floouior Inc All rights reserved.
Descrive (in the correct order) the sequence of the blood flow through a four chambered mammalian heart. Be sure to address the following:
1. Begin with the return of oxygen poor blood from the body.
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From the experimental activity for PhysioEX
Which of the following forms the (Y) axis of this graph
Which of the following forms the (X) axis of this graph
(A) Y - vessel length / X - flow rate
(B) Y - flow rate / X - vessel length
(C) Y - flow rate / X - peripheral resistance
(D) Y - peripheral resistance / X - flow rate
Chapter 53 Solutions
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