Connect With Learnsmart Labs Access Card For Biology: Concepts And Investigations
4th Edition
ISBN: 9781259870002
Author: Mariëlle Hoefnagels Dr.
Publisher: McGraw-Hill Education
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Question
Chapter 30, Problem 4MCQ
Summary Introduction
Introduction:
Heart is a muscular organ which is responsible for the transportation of oxygen and nutrients in body through blood and removal of
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What 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 occurs
Which statement best describes Arteries?
A) They have thin walls and transport blood away from the heart
B) They have thick walls and transport blood toward the heart
C) They have thin walls and transport blood toward the heart
D) They have thick walls and transport blood away from the heart
The interventricular septum and the intra-atrial septum separate the:
a) chambers of the heart
b) chambers of the lungs
c) aorta and pulmonary artery
f) bicuspid and tricuspid valves
answer: A
explain for each choices why they are correct or incorrect answer
Chapter 30 Solutions
Connect With Learnsmart Labs Access Card For Biology: Concepts And Investigations
Ch. 30.1 - What are the components of a circulatory system?Ch. 30.1 - Distinguish between open and closed circulatory...Ch. 30.1 - Describe the circulatory systems of fishes,...Ch. 30.2 - What are the components of blood?Ch. 30.2 - Prob. 2MCCh. 30.2 - Prob. 3MCCh. 30.3 - Prob. 1MCCh. 30.3 - Prob. 2MCCh. 30.4 - Trace the pathway of an O2 molecule from the lungs...Ch. 30.4 - Why is the heart sometimes called two hearts that...
Ch. 30.4 - Prob. 3MCCh. 30.4 - Prob. 4MCCh. 30.5 - Prob. 1MCCh. 30.5 - Prob. 2MCCh. 30.5 - Prob. 3MCCh. 30.6 - Prob. 1MCCh. 30.6 - Prob. 2MCCh. 30.6 - Prob. 3MCCh. 30.7 - Prob. 1MCCh. 30.7 - Prob. 2MCCh. 30 - What is the advantage of a four-chambered heart?...Ch. 30 - Prob. 2MCQCh. 30 - Which of the following blood transfusions would be...Ch. 30 - Prob. 4MCQCh. 30 - Prob. 5MCQCh. 30 - Prob. 6MCQCh. 30 - Prob. 7MCQCh. 30 - Prob. 8MCQCh. 30 - How are open and closed circulatory systems...Ch. 30 - Prob. 2WIOCh. 30 - Prob. 3WIOCh. 30 - Prob. 4WIOCh. 30 - Prob. 5WIOCh. 30 - Prob. 6WIOCh. 30 - Describe the events that occur during one cardiac...Ch. 30 - What is the function of heart valves? Why might a...Ch. 30 - Make a chart that compares systemic arteries,...Ch. 30 - Prob. 10WIOCh. 30 - Prob. 11WIOCh. 30 - Prob. 12WIOCh. 30 - The carotid artery extends from the heart to the...Ch. 30 - Prob. 14WIOCh. 30 - Prob. 15WIOCh. 30 - Name three ways that the circulatory system helps...Ch. 30 - Prob. 17WIOCh. 30 - Prob. 18WIOCh. 30 - Prob. 1PITCh. 30 - Prob. 2PITCh. 30 - Prob. 3PIT
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- Why do arteries have thick walls of muscle and elastic fibers? a. to give more area for cholesterol to deposit b. strength and ability to expand and contract during heartbeats c. to allow blood to flow in both directionsarrow_forwardThe most common disorder affecting the heart and blood vessels is ? A. arrhythmia B. Hypertension C.Aneurysm D. infarctionarrow_forwardAn increase in mean blood pressure may be due to? a) an increase in heart rate b) an increase in peripheral resistance c) an increase in stroke volumearrow_forward
- Which is TRUE about isovolumetric contraction of the heart? a. AV valves are closed; SL valves are open b. AV and SL valves are open c. AV valves are open; SL valves are closed d. AV and SL valves are closedarrow_forwardWhich 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_forwardWhen it comes to arteries and veins, do veins have? a) a tunica media that is missing in arteries b) thicker walls than arteries c) more smooth muscles than arteries d) valves, this is lacking in arteriesarrow_forward
- 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 nodesarrow_forwardGiven: One night your body goes crazy and the amount of albumin in your blood doubles. a. What will this do to your blood pressure, and why? b. What are actions your body could take to reverse this change in blood pressure, and where would this take place? (Answer a and b)arrow_forwardWhat valve is located between the left atrium and left ventricle? a-Tricuspid valve b-Bicuspid valve c-Pulmonary valve d-Aortic valvearrow_forward
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