BIO SCI 132 ANATOMY Week 3 Quiz, Exams of Nursing

Download BIO SCI 132 ANATOMY Week 3 Quiz and more Exams Nursing in PDF only on Docsity! BIO SCI 132 ANATOMY Week 3 Quiz Part 1 of 7 - 15.0/ 15.0 Points Question 1 of 32 3.0/ 3.0 Points What is the most common leukocyte in the human body? • A. natural killer (NK) cells • B. neutrophils • C. lymphocytes • D. basophils • E. eosinophils Feedback: Good work; your answer is correct! Question 2 of 32 3.0/ 3.0 Points Which of the following is/are true of platelets? • A. They arise from cells called megakaryocytes. • B. They do not contain a nucleus. • C. They play an important part in the clotting of blood. • D. They are not cells. • E. All of the above are true. Feedback: Good work; your answer is correct! Question 3 of 32 3.0/ 3.0 Points Which of the following is/are important in the process named coagulation? • A. Coagulation is a complicated cascade of reactions that result in the formation of a mesh of fibrin. • B. Coagulation can only occur in the presence of two or three different “clotting factors.” • C. Neither an excess number of platelets nor having many too few platelets in the blood stream will cause any serious reaction. • D. Coagulation is a very simple and straight-forward series of only two or three steps. • C. The preload and afterload are the primary factors that cause the heart rate to change. • D. Contractility of the heart muscle refers to the force of contraction that this muscle can exert. • E. Both C and D are true. Feedback: Contractility refers to the force of the contraction of the heart muscle. Question 7 of 32 3.0/ 3.0 Points Which of the following statements is/are true? • A. The size of a well-trained athlete’s heart is usually smaller than normal. • B. A typical heart is approximately the size of your fist: 12 cm (5 in) in length, 8 cm (3.5 in) wide, and 6 cm (2.5 in) in thickness. • C. A female’s heart usually weighs more than a male’s heart. • D. The size of the adult heart is about the same as the size of a newborn baby’s head. • E. The weight of the adult male and female hearts is approximately 1000 grams. Feedback: Good work; your answer is correct! Question 8 of 32 0.0/ 3.0 Points Which of the following statements about valves in the heart is/are true? • A. A valve enables blood to only flow in one direction. • B. A valve keeps blood from flowing in a reverse direction. • C. All of the valves open when the blood pressure on one side of the valve is higher than on the other side of the valve. • D. Statements A and B are correct. Statement C is incorrect. • E. Statements A, B, and C are correct. Feedback: Statements A, B, and C are correct. Question 9 of 32 3.0/ 3.0 Points The arteries that supply blood to the myocardium of the heart are called: • A. coronary arteries • B. pericardial arteries • C. valvular arteries • D. penetrating arteries • E. myocardial arteries Feedback: Good work; your answer is correct! Question 10 of 32 0.0/ 3.0 Points A cardiac muscle cell is: • A. a voluntary muscle just like skeletal muscle. • B. contracts spontaneously. • C. is joined to other cardiac muscle cells by structures called intercalated discs. • D. has numerous nuclei. • E. Two of the statements above are correct. Feedback: The capillaries engorge to deliver the blood to the working muscles. Question 14 of 32 3.0/ 3.0 Points Systolic pressure minus diastolic pressure is another term for: • A. Mean arterial pressure (MAP) • B. Cardiac output • C. Pulse pressure • D. Stroke volume • E. peripheral resistance Feedback: Good work; your answer is correct! Question 15 of 32 3.0/ 3.0 Points These control the blood flow through a capillary bed. • A. Precapillary sphincters • B. AV values • C. Arterioles • D. Thoroughfare channel • E. Vasorum Feedback: Good work; your answer is correct! Question 16 of 32 3.0/ 3.0 Points The pulmonary arteries carry blood to the . • A. Heart • B. Systemic system • C. Lungs • D. Aorta • E. Ventricles Feedback: Good work; your answer is correct! Part 4 of 7 - 15.0/ 18.0 Points Question 17 of 32 3.0/ 3.0 Points Which Immunoglobulin class is found attached to the surface of B cells? • A. IgA • B. d. IgG • C. IgD • D. IgE • E. IgM Feedback: Good work; your answer is correct! Question 18 of 32 3.0/ 3.0 Points The white pulp area in the spleen contains large amounts of . • A. Lymph • • C. Interferons • D. Compliment system • E. All of the above are nonspecific defenses. Feedback: Good work; your answer is correct! Question 22 of 32 3.0/ 3.0 Points The only antibodies that can cross the placenta are the . • A. IgG • B. IgM • C. a. IgA • D. IgD • E. IgE Feedback: Good work; your answer is correct! Part 5 of 7 - 12.0/ 21.0 Points Question 23 of 32 3.0/ 3.0 Points Research shows that in the absence of neural and hormonal influences, the sinoatrial (SA) node generates action potentials at a frequency of about 100 times per minute. However, the resting heart rate is about 70 beats per minute. What would the approximate heart rate be if the vagus nerve were severed? • A. slower than 70 beats per minute • B. about 70 beats per minute • C. faster than 100 beats per minute • D. about 100 beats per minute Feedback: Correct! Question 24 of 32 3.0/ 3.0 Points The repolarization of cardiac muscle is due to . • A. potassium exiting the cell • B. sodium exiting the cell • C. sodium entering the cell • D. potassium entering the cell Feedback: Correct! Question 25 of 32 3.0/ 3.0 Points The effect of the sympathetic nervous system on the heart is to . • A. decrease the heart rate • B. increase the heart rate • C. increase the heart rate and increase the force of contraction • D. decrease the heart rate and decrease the force of contraction Feedback: Correct! Question 26 of 32 0.0/ 3.0 Points The effect of vagus nerve stimulation on the heart is to . •