Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Transcribed Image Text:Fill in the blank:
1. Arteries have
muscular walls to withstand high
coming from the heart pumping.
2. Veins have
walls and one-way.
to help blood
_to the heart.
3. Capillaries have the
diameter of all the blood vessels but the
surface area due to
their extensive branching. They are the site of _
4. The electrical activity starts at the.
atrium stimulating the
node and spreads to the
atrium, through Bachman's bundle to
to contract. Electricity then travels to the
and
the
_s. This delay is critical otherwise the
would contract at the same time and blood would not flow properly. The distal portion of the
node where it is delayed
node is
known as the Bundle of. It splits into
fibers in the
branches. The bundle branches activate the
and
ventricle to contract.
5. Heart rate is expressed as
and can be taken from your
artery in your wrist or your
artery in your neck.
6. Label the following parts of the heart and trace the pathway of blood
To the body
Key
Blood flow From the
Heart Anatomy
(interior view)
body
To the
lunge
From
the
2- lungs
From the
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