EBK BIOLOGY
6th Edition
ISBN: 9780134819150
Author: Maier
Publisher: VST
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Chapter 20, Problem 6LTB
Summary Introduction
Introduction:
The heart is composed of four chambers, right atrium, right ventricle, left atrium and left ventricle. These four chambers make two independent pumps. The work of one pump is to send deoxygenated blood to the lungs. The function of the other pump is to send the oxygenated blood to the rest of the body.
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If an artery becomes clogged with plaque, a procedure called a/an ______ can be performed to open up the artery and put a stent in to help keep it open
During exercise, the regulation of blood flow to the skeletal muscle occurs at the____________.
Group of answer choices
Aorta
Vena Cava
arterioles
venuoles
Fill in the blank:
The QRS complex corresponds to depolarization of the muscle fibers of the _______________________.
Chapter 20 Solutions
EBK BIOLOGY
Ch. 20 - Describe how contraction of the diaphragm allows...Ch. 20 - Prob. 2LTBCh. 20 - Alveoli are ___________. small air sacs at the...Ch. 20 - Prob. 4LTBCh. 20 - Prob. 5LTBCh. 20 - Prob. 6LTBCh. 20 - Prob. 7LTBCh. 20 - Prob. 8LTBCh. 20 - Heart attacks ___________. are typically caused by...Ch. 20 - Prob. 10LTB
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- The blood enters the heart from the ___________ through the vena cava. It enters the_____________ _____________, travels through the _____________ ____________ andflows into the right ____________.• The muscle surrounding the right ventricle _____________, pushing blood through the______________ _____________.• Blood then travels to the lungs through the ___________ ________.• Here it exchanges carbon dioxide for _____________. The blood then flows back to theheart through the ______________ ______ into the _______ _______.• Once the left atrium fills with blood, the ___________ ________ opens to allow blood intothe ________ __________.• The left ventricle then contracts, pushing blood through the _____________ ___________into the _____________.• From here, oxygen rich blood is circulated around the body, giving ________ and nutrientsto cells.arrow_forwardThe sinoatrial node develops from an embryonic heart tube chamber called the _____.arrow_forwardFill in the blank: The cardiac control center is located in the _______________________ of the brain stem.arrow_forward
- The base of the heart is _____________ to the apex of the heart. inferior superiorarrow_forwardThe _________ is a muscular wall between the left and right ventricles.arrow_forwardThe left ____________________________ can often be seen superior to the aortic arch as it courses horizontally towards the _____.arrow_forward
- The heart is lateral to the lungs. True or falsearrow_forwardWith respect to their role in fetal circulation, the ductus venosus, foramen ovale, and ductus arteriosus are examples of a(n) _________________. hilum anastomosis vascular shunt vascular plexusarrow_forwardThe left and right sides of the heart are separated by a structure called the ___ .arrow_forward
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