Answered: Select the letter of the choice that…

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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Related questions

Question

Select the letter of the choice that best completes the statement. The desirable blood level for total cholesterol is between
a. 200 and 250 mg/dL.
b. 175 and 200 mg/dL.
c. 160 and 175 mg/dL.
d. 125 and 150 mg/dL.

Expert Solution

Step 1

Cholesterol is a waxy, fat-like substance in the blood and in all the cells of the body. When it builds within the inner walls of arteries, it solidifies and turns into plaque. That plaque can contract the artery walls and decrease blood stream, which can cause blocks that can lead to blood clots, heart attacks, or strokes. There are three types of cholesterol-

Low-density lipoprotein (LDL) cholesterol: When too much LDL cholesterol is present in the circulatory system, it can clog arteries and put an individual at risk for a heart attack or stroke. It’s created normally by the body.
High-density lipoprotein (HDL) cholesterol: High levels of HDL cholesterol expel excess plaque from arteries, slowing its buildup and helping to secure against a heart attack. Low levels, however, can really increment the risk.
Triglycerides: A form of fat made within the body that circulates in the blood. High triglycerides may elevate the risk of heart disease and stroke.