PBH 306 Study Guide - Midterm Guide: Pulmonary Circulation, Pulmonary Vein, Pulmonary Artery

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viridianmosquito1217426

28 Nov 2022

School

Dillard University

Department

Public Health

Course

PBH 306

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Document Summary

A schematic of the circulatory system illustrating the pulmonary circulation picking up oxygen from the lungs and the systemic circulation delivering oxygen to the body. Step 7: heart chambers alternate between relaxing and contracting: during relaxation, chambers fill, during contraction, chambers push blood forward, the relaxation phase is diastole, the contraction phase is systole. The atrioventricular (av) node is stimulated: step 3. The av node transfers stimulation the atrioventricular (av) bundle: step 4. The electrical wave travels from the av bundle down the bundle branches: step 5 the purkinje fibers in the ventricular myocardium are stimulated. Blood vessels: the heart is the pump that moves blood and the blood vessels are the pipes that circulate it, there are three types of vessels, arteries, capillaries, veins, the lumen is the channel within the blood vessels. Figure- superior view of heart valves illustrating position, size, and shape of each valve.

Related Questions

An important aspect of this qustion is relatively the need to understand the Cardiovascular System/Circulatory System, in order to answer the question. The main role of the cardiovascular system is to move blood through the body. The composition includes: Heart, capillaries, veins and arteries. The system moves oxygenated blood from the lungs and heart through the whole body via arteries. Blood also travels through the capillaries that are found between the arteries and veins. There are multiple diseases that affect the Cardiovascular System Angina, Arrhythmia, Congenital Heart Disease, Coronary Artery Disease, Myocardial Infarction, CHF, Hypertrophic Cardiomyopathy, Mitral Regurgitation, Mitral Valve Prolapse, Pulmonary Stenosis, etc. In Addition there are Vascular Diseases: Peripheral Artery Disease, Aneurism, Atherosclerosis, Renal Artery Disease, Raynauds Disease, Buergerâs Disease, Peripheral Venous Disease, Stroke, Venous Blood Clots, and Blood Clotting Disorders (American Heart Association, 2015). Multiple treatments exist for each and every one of these diseases, and hopefully more to come. American Heart Association. (2015). What is cardiovascular disease? Retrieved from http://www.heart.org.

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1) Check all that are components of the sympathetic innervation of the heart.

Check All That Apply

Cervical sympathetic ganglion

Spinal cord Spinal cord

Vagus nerve (CN X)

Cardiac nerve

Sympathetic postganglionic axon

2) Check all that occur during ventricular contraction.

Check All That Apply

The AV valves open to allow blood to enter the ventricles from the atria.

The semilunar valves remain closed to prevent backflow of blood into the ventricles.

The semilunar valves open to allow blood to flow into the large arteries.

The AV valves close to prevent backflow of blood into the atria.

3) Put the pattern of circulation into the correct order, beginning with the pulmonary circulation.

Blood enters the plumonary arteries and travels to the lungs.

Blood leaves the right side of the heart.

Blood enters the plmonary veins.

Blood enters the system arteries.

Blood delivers oxygen to the tissues, and then enters systematic veins.

Blood enters the left side of the heart.

4)Check all that are characteristics of cardiac muscle.

Check All That Apply

Cells are long and cylindrical.

Cells are short and branching.

Cells have multiple nuclei at the periphery of the cell.

Cells have one or two nuclei in the center of the cell.

They are composed of thick and thin filaments.

The functional contractile unit is the sarcomere.

Please answer the below questions ( I need answers for all the below questions). Thank you

True or False

Write true if the statement is true or false if the statement is false.

_______ The heart consists mainly of muscle.

_______ Blood pressure is highest in veins.

_______ Atherosclerosis is the buildup of plaque inside arteries.

_______ Platelets are blood cells that fight infections.

_______ Peripheral gas exchange takes place in the lungs.

_______ Food travels from the mouth to the stomach because of gravity.

_______ Most absorption of nutrients takes place in the stomach.

_______ For good health, you should never eat lipids.

_______ The kidneys are the main organs of the excretory system.

_______ Nephrons carry urine out of the body.

Fill in the Blanks

Fill in the blank with the term that best completes the sentence.

____________ is blood pressure that is higher than normal.

The liquid part of blood is referred to as ____________.

Blood type is determined by the presence or absence of ____________ on blood cells.

Tiny sacs in the lungs where gas exchange takes place are called ____________.

The disease in which air passages of the lungs periodically become too narrow is ____________.

A wave of involuntary muscle contractions that moves food through the digestive system is called ____________.

The physical breakdown of chunks of food into smaller pieces is referred to as ___________ digestion.

The small intestine is lined with tiny finger-like projections named ____________.

Solid waste that leaves the large intestine is known as ____________.

____________ are organic compounds needed in small amounts for the body to function properly.

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PBH 306 Study Guide - Midterm Guide: Pulmonary Circulation, Pulmonary Vein, Pulmonary Artery

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