BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 48, Problem 2A
Summary Introduction
Introduction:
The human heart is a four-chambered muscular organ that is associated with the circulation of blood throughout the human body. It is a part of the circulatory system that consists of blood vessels (arteries, capillaries, and veins) along with the heart. The heart is located within the ribcage between the lungs, slightly left in position.
The upper two chambers are referred as auricles or atrium, while the lower two chambers are referred as ventricles. Antrio-ventricular valves are present in between atrium and ventricles that separates them from one another. These valves include mitral valve and tricuspid valve. Tricuspid valve is present on the right side, while mitral valve is present on the left side.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
When oxygen-rich blood from the lungs is pumped to the rest of the body, so the cells can use the oxygen - oxygen - poor blood is then turned to the heart is ???
A. Circulation
B. Heart circulation
C. Pulmonary circulation
D. Systematic circulation
Which of the following statements is correct?
a. Arteries carry blood away from the heart and veins carry blood to the heart.
b. Arteries carry blood to the heart and veins carry blood away from the heart.
C. All arteries carry oxygen-rich blood and veins carry oxygen-poor blood.
d. Arteries carry oxygen-poor blood and veins carry oxygen-rich blood.
What do the vessels that are carrying oxygen-poor blood back to the heart have that stops blood from flowing backwards?
A.thick muscular walls
B.valves
C.hemoglobin
D.SA nodes
Chapter 48 Solutions
BIOLOGY
Ch. 48.1 - Prob. 1LOCh. 48.1 - Prob. 2LOCh. 48.2 - Prob. 1LOCh. 48.2 - Prob. 2LOCh. 48.2 - Prob. 3LOCh. 48.3 - Prob. 1LOCh. 48.3 - Prob. 2LOCh. 48.4 - Prob. 1LOCh. 48.4 - Prob. 2LOCh. 48.5 - Prob. 1LO
Ch. 48.5 - Prob. 2LOCh. 48.5 - Prob. 3LOCh. 48.5 - Prob. 4LOCh. 48 - Prob. 1DACh. 48 - Prob. 1IQCh. 48 - Prob. 2IQCh. 48 - An ECG measures a. changes in electrical potential...Ch. 48 - Systole is vitally important to heart function and...Ch. 48 - Which of the following is the correct sequence of...Ch. 48 - Which of the following statements is not true? a....Ch. 48 - Prob. 5UCh. 48 - Prob. 6UCh. 48 - When a sphygmomanometer is used, a. blood pulses...Ch. 48 - Prob. 8UCh. 48 - In vertebrate hearts, atria contract from the top,...Ch. 48 - Prob. 2ACh. 48 - The difference between the amphibian and mammal...Ch. 48 - Prob. 4ACh. 48 - Humans have a number of mechanisms that help to...Ch. 48 - Prob. 2SCh. 48 - Is the evolution of the four-chambered heart...Ch. 48 - Prob. 4S
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- How would the left ventricle of a patient who had had high blood pressure for many years differ from the left ventricle of a normal heart? A it would have a larger volume of muscle B it would have a smaller volume of muscle C it would be smaller than the right ventricle D chronic high blood pressure would weaken the heart valves but would have no anatomical effects on the walls of the ventriclesarrow_forwardWhat happens when the pressure in the ventricles becomes lower than the pressure in the atria? a-the atrioventricular valves open b-the semilunar valves close c-the semilunar valves open d-the first heart sound occursarrow_forwardWhich of the following best describes the mechanism of action of a cardiac glycoside? A) Strengthens ventricular contraction B) Inhibits sodium production C) Vasoconstriction D) Inhibits cholesterol formationarrow_forward
- The heart chamber that receives oxygenated blood from the lungs of animals with a double circulation is the a. left atrium. b. right ventricle. c. left ventricle. d. right atrium.arrow_forwardWhich of the following is a large blood vessel that carries blood away from the heart? A. Vein B. Artery C. Capillary D. Nervearrow_forwardHow do arteries differ from veins?a. Arteries have thicker wall layers to accommodate the changes in pressure from the heart.b. Arteries carry blood.c. Arteries have thinner wall layers and valves and move blood by the action of skeletal muscle.d. Arteries are thin walled and are used for gas exchange.arrow_forward
- Which statement accurately explains why arterial walls are thicker than the walls of veins? A. Arteries need to withstand more hydrostatic pressure than do the veins. B. More blood flows through the arteries than through the veins. C. Arterial blood has more red blood cells than veins do. D. The higher oxygen content of arterial blood requires thicker walls. E. All of the above answer choices correctly answer the question.arrow_forwardWhich of the choices below best describes the systemic circulation of blood?a. The flow of blood into the right atrium and eventually out of the left ventricle.b. The movement of blood from the pulmonary trunk, through capillaries into the pulmonary veins.c. The movement of blood into the coronary arteries, through capillaries into the coronary sinus.d. The movement of blood from the aorta, through arteries and capillaries and then eventually to the vena cavae.arrow_forwardWhich of the following statements is false?a. Only arteries carry oxygenated blood.b. Both arteries and veins have a layer of smooth muscle.c. Capillary beds lie between arteries and veins.d. Sphincters regulate the flow of blood through capillaries.arrow_forward
- Which statement is true? a. Veins have more muscle and elastic fibers than arteries b. Arteries have more muscle and elastic fibers than veins c. Veins carry blood away from the heart d. Arteries carry blood to the heartarrow_forwardWhich of the following changes happen at birth or a couple hours afterward? A) The connection between the right and left ventricles gets sealed. B) The connection between the left pulmonary artery and aorta gets sealed. C) The connection between the right ventricle and pulmonary trunk gets sealed. D) The connection between the left atrium and left ventricles gets sealed.arrow_forwardSmoking constricts blood vessels, causing tissues to receive less oxygen. What effect does this have on the heart? a. The heartbeat slows b. Valves in the heart close down c. Valves in the heart open further d. The heartbeat increasesarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Medical Terminology for Health Professions, Spira...Health & NutritionISBN:9781305634350Author:Ann Ehrlich, Carol L. Schroeder, Laura Ehrlich, Katrina A. SchroederPublisher:Cengage Learning
Medical Terminology for Health Professions, Spira...
Health & Nutrition
ISBN:9781305634350
Author:Ann Ehrlich, Carol L. Schroeder, Laura Ehrlich, Katrina A. Schroeder
Publisher:Cengage Learning