Answer Key To Review Sheet 32 Anatomy And Physiology Pdf Anatomy Of Blood Vessels
File Name: answer key to review sheet 32 anatomy and physiology anatomy of blood vessels.zip
Name all structures vessels heart chambers and others passed through en route. Revise the text rewrite it. Review sheet 32 anatomy of blood vessels.
- Anatomy and Physiology Questions
- Anatomy and Physiology Questions
- Review Sheet Exercise 31 Conduction System of the Heart and Electrocardiography
A stroke happens when there is a loss of blood flow to part of the brain.
Anatomy and Physiology Questions
List the elements of the intrinsic conduction system in order, starting from the SA node. At what structure in the transmission sequence is the impulse temporarily delayed?
AV node. Allows completion of atrial contraction before initiation of ventricular systole. Even though cardiac muscle has an inherent ability to beat, the nodal system plays a critical role in heart physiology. What is that role? Ensures that depolarization proceeds in an orderly manner from atria to ventricles; accelerates and coordinates heart activity to effectively pump blood Electrocardiography. Define ECG. Recording of electrical changes occurring during heart activity.
Draw an ECG wave form representing one heartbeat. Why does heart rate increase during running? Heart rate increases during running secondary to action of the sympathetic nervous system. Norepinephrine, released by sympathetic axons on the heart, and the hormone epinephrine released during a sympathetic. Which would be more serious, atrial or ventricular fibrillation? Ventricular fibrillation. The ventricles bear major responsibility for pumping blood from the heart to the lungs and all other body organs.
Abnormalities of heart valves can be detected more accurately by auscultation than by electrocardiography. Why is this so? Most often serious valve problems cause turbulennt blood flow, which can be detected heard with a stethoscope. Since the valves do not have electrical activity they are not part of the conduction system no electrical signals can be recorded from them on the ECG.
Cross-sectional views of an artery and of a vein are shown here. Identify each ; on the lines to the sides, note the structural details that enabled you to make these identifications:. Now describe each tunic more fully by selecting its characteristics from the key below and placing the appropriate key letters on the answer lines. Why are valves present in veins but not in arteries? The high blood pressure in arteries propels the blood through them.
The blood pressure in veins is low and often the blood is flowing against gravity. Valves prevent backflow. Why are the walls of arteries proportionately thicker than those of the corresponding veins? Arteries must withstand high pressure and pressure fluctuations. Veins are low-pressure vessels. The anterior and middle cerebral arteries arise from the internal carotid artery. Trace the pathway of a drop of blood from the aorta to the left occipital lobe of the brain, noting all structures through which it flows.
The human arterial and venous systems are diagrammed on this page and the next. Identify all indicated blood vessels. Trace the blood flow for each of the following situations. How does this differ in the pulmonary arteries and veins? The pulmonary arteries carry oxygen-poor blood to the lungs, whereas the pulmonary veins carry oxygen-rich blood from the lungs to the left heart.
Using the grouped sets of terms to the right of the diagram, correctly identify each trace, valve closings and openings, and each time period of the cardiac cycle.
What event within the heart causes the AV valves to open? Atrial pressure greater than. When are the semilunar valves closed? During the period of relaxation of the heart as a.
What event causes the semilunar valves to open? Ventricular pressure greater than pressure in great arteries. Are both sets of valves closed during any part of the cycle? If so, when? Momentarily after atrial contraction and ventricular systole. At what point in the cardiac cycle is the pressure in the heart highest?
Ventricular systole. Ventricular diastole. What event results in the pressure deflection called the dicrotic notch? The momentary increase in aortic pressure that occurs when its semilunar valves snap shut. Using the key below, indicate the time interval occupied by the following events of the cardiac cycle. Quiescent period ventricular relaxation period. What two factors promote the movement of blood through the heart? Alternate contraction and relaxation of the myocardium.
As you listened to the heart sounds during the laboratory session, what differences in pitch, length, and amplitude loudness of the two sounds did you observe?
First heart sound is longer, louder, and lower in pitch than the second heart sound, which is short, sharp, and high-pitched. In order to auscultate most accurately, indicate where you would place your stethoscope for the following sounds:closure of the tricuspid valve: Left or right sternal border of the 5th intercostal space.
Which valve is heard most clearly when the apical heartbeat is auscultated? When you were palpating the various pulse or pressure points, which appeared to have the greatest amplitude or tension? Carotid artery Why do you think this was so? The carotid arteries are the major arteries that deliver blood to the brain and they are closest to the heart.
Assume someone has been injured in an auto accident and is hemorrhaging badly. What pressure point would you compress to help stop bleeding from each of the following areas?
How could you tell by simple observation whether bleeding is arterial or venous? If it spurts, it is arterial. It will flow evenly if it is venous blood. What is this difference called? Pulse deficit Blood Pressure Determinations Define blood pressure. Pressure exerted by blood against the walls of the blood vessels Identify the phase of the cardiac cycle to which each of the following applies. What causes the disappearance of the sound? Blood is flowing freely; the artery is no.
Why is this measurement important? It indicates the actual working pressure actual amount of blood forced out of the heart during systole. Veins are far removed from the pumping action of the heart. How is it performed? A person takes a deep breath, and mimics the motions of exhaling forcibly, but without actually exhaling. The glottis will close and the intrathoracic pressure will increase.
What immediate changes in blood pressure did you observe when the subject stood up after being in the sitting or reclining position? It decreased initially and then increased. How do you account for this change? Decreased activity of the sympathetic nervous system. Why are there normally no significant increases in diastolic pressure after exercise? Since diastolic pressure reflects the heart in relaxation, it would not be expected to.
Namun, pelaksanaan perjanjian ekonomi juga mendatangkan pelbagai implikasi. AV node Why? Norepinephrine, released by sympathetic axons on the heart, and the hormone epinephrine released during a sympathetic discharge stimulate pacemaker cells to fire more rapidly. Describe what happens in the cardiac cycle in the following situations. Define the following terms. Ventricular fibrillation Why?
Identify each ; on the lines to the sides, note the structural details that enabled you to make these identifications: Now describe each tunic more fully by selecting its characteristics from the key below and placing the appropriate key letters on the answer lines. Name two events occurring within the body that aid in venous return. Use the key on the right to identify the arteries or veins described on the left.
Some terms are used more than once. Carries O 2 -poor blood from the fetus to the placenta. Carries O 2 -rich blood from the placenta to the fetus.
Anatomy and Physiology Questions
A review was requested, and Log graph paper was deemed valueless. For Log graph paper to be considered as having "no content" is an insult to all log fans everywhere! I am hopeful about the future of Logarithmic Graph Paper, but we mustn't ever forget these dark times! Oscp pain writeup. Voluntary muscles produce movements like chewing, walking, and talking. The disease is progressive, meaning the symptoms get worse over time. Baclofen is a skeletal muscle relaxant.
Also, test your knowledge in medical terminology. Read these instructions before taking this practice exam. This type of fracture is known as which of the following? The procedure will be performed on which of the following structures? Which one of the following organs is most likely to be involved? All rights reserved.
Blood is carried through the body via blood vessels. An artery is a blood vessel that carries blood away from the heart, where it branches into ever-smaller vessels. Eventually, the smallest arteries, vessels called arterioles, further branch into tiny capillaries, where nutrients and wastes are exchanged, and then combine with other vessels that exit capillaries to form venules, small blood vessels that carry blood to a vein, a larger blood vessel that returns blood to the heart. Arteries and veins transport blood in two distinct circuits: the systemic circuit and the pulmonary circuit Figure The blood returned to the heart through systemic veins has less oxygen, since much of the oxygen carried by the arteries has been delivered to the cells. In contrast, in the pulmonary circuit, arteries carry blood low in oxygen exclusively to the lungs for gas exchange. Pulmonary veins then return freshly oxygenated blood from the lungs to the heart to be pumped back out into systemic circulation.
E XERCISE www. Anatomy of Blood Vessels. Microscopic Structure of the Blood Vessels. 1. Use the key choices to identify the blood vessel tunic described.
Review Sheet Exercise 31 Conduction System of the Heart and Electrocardiography
The heart is a muscular organ in most animals, which pumps blood through the blood vessels of the circulatory system. In humans, other mammals, and birds, the heart is divided into four chambers: upper left and right atria and lower left and right ventricles. The wall of the heart is made up of three layers: epicardium , myocardium , and endocardium. The heart pumps blood with a rhythm determined by a group of pacemaking cells in the sinoatrial node. These generate a current that causes contraction of the heart, traveling through the atrioventricular node and along the conduction system of the heart.
The diagram below shows a section through the heart seen from the same direction as the external view in question 1. Jump to: navigation , search. The diagram below shows an external view of the mammalian heart.
Anatomy Of The Heart Worksheet. To learn more about the body, see our series of Human Anatomy sheets. This coordinates with our Human Heart Labeling Worksheet below.