Chapter 23: Understanding the blood supply to the heart is the first step in understanding this system. Describe this pr...
Chapter 23:
Understanding the blood supply to the heart is the first step in understanding this system. Describe this process, including blood flow through the heart and the chambers and valves. If you have a great way to help your classmates remember the blood flow patterns, share that information here!
A person who is hemorrhaging has a rapid heart rate. Why? Will the increase in heart rate help with the condition?
Chapter 24:
Find a picture of peripheral vascular disease on the Internet (this can be a picture of what is happening inside of the body or this could be a picture of a patient that is experiencing PVD). Attach this picture to your assignment as well as the discussion post. Next, describe in 150-250 words what is happening to the patient, discussing the pathophysiology behind peripheral vascular disease.
Pick one type of shock and describe the pathogenesis of that specific type of shock. Next, describe appropriate nursing interventions and treatments for your specific type of shock.
Homework Answers
Chapter 23:
Hemorrhage causes loss of blood, which reduces the blood volume. This causes sympathetic stimulation to increase the heart rate and force of contraction, thus, to increase cardiac output to meet the body demands.
Coronary circulation, or the blood supply to heart:
Coronary circulation is constituted by blood vessels of the heart wall. Left and Right coronary artery arising from the Aorta immediately after leaving the left ventricle.
Left Coronary Artery (LCA): It travels through coronary sulcus which is present under the left auricle. It divides into two main branches, anterior interventricular branch, and circumflex branch.
Anterior interventricular branch: It is also known as the left anterior descending artery. It supplies to both the right and left ventricles and the anterior two-thirds of the interventricular septum. It travels down to the apex through anterior interventricular sulcus. It rounds the bend, travels a short distance upwards on the posterior side of the heart.
Circumflex branch: In the coronary sulcus it continues around heart and it supplies blood to the posterior wall of left ventricle and left atrium.
Right Coronary Artery (RCA): It supplies the sinoatrial node, right atrium and then it continues along the coronary sulcus under the right auricle and it gives two branches, right marginal branch and posterior interventricular branch.
Right marginal branch: It runs to the apex of the heart and it supplies the lateral aspect of right atrium and right ventricle.
Posterior interventricular branch: It is a small branch which arises on the posterior side from the Right coronary artery. It supplies blood to posterior walls of both right and left ventricles and also supplies posterior portion of the interventricular septum.
The deoxygenated blood from the capillaries of the myocardium is drained by the cardiac veins that run parallel to the coronary arteries. The veins together join to form an enlarged vein, the “coronary sinus.” The coronary sinus empties into the right atrium.
The pathway of coronary circulation is illustrated below:
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Chapter 23: Understanding the blood supply to the heart is the first step in understanding this system. Describe this pr...
Answer the questions in the photo. 1. Please identify the 4 chambers of the heart, and...
Answer the questions in the photo.
1. Please identify the 4 chambers of the heart, and the 4 valves that regulate flow through the heart and out of the heart. 2. Describe how the heart sounds (S1 and S2) relate to our understanding of the cardiac cycle. How does this correlate with the EKG tracing? Why is this coordination critical in enabling the heart to develop pressure gradients, and maintain adequate cardiac output? 3. We discussed the Frank-Starling Law of...
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Answer the questions in the photo.
1. Please identify the 4 chambers of the heart, and the 4 valves that regulate flow through the heart and out of the heart. 2. Describe how the heart sounds (S1 and S2) relate to our understanding of the cardiac cycle. How does this correlate with the EKG tracing? Why is this coordination critical in enabling the heart to develop pressure gradients, and maintain adequate cardiac output? 3. We discussed the Frank-Starling Law of...
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Microscopic Structure of the Blood Vessels l views of an artery and of a vein are shown here Identily each, on the lines to the sides, note the structural details that enabled you to make these identifications (vessel type) (vessel type) Now descibe each tunic more fully by selecting ts characteristics from the key below and placing the approprate key lettes on the answer lines Tunica intima Tunica media Tunica externa Key: a innermost tunic b. most superficial tunic regulates...
If someone can help me with the first table and then use the
given information to figure out the diagnosis for the patient
described in the second table. Please explain why you chose a
certain diagnosis so I can try to gain a better understanding!
Thanks in advance!:)
Table 1 Region Function Structure glomerulus Bowman's capsule Cortex proximal tubule distal tubule descending loop of Henle ascending loop of Henle Medulla collecting duct renal papilla Renal pelvis ureter Date: Technician: Patient...
Case Study, Chapter 64, Introduction to the Integumentary System Alice Bixby, an 83-year-old female client js admifted with a cerebral vascular accident with the aphasia and hemiparesis (paralysis of the right side of the body). The client has global a has difficulty speaking or understanding what is said. The client is incontinent of urine and stool and wears adult incontinent briefs. The client has a thickened diet to nectar consistency because of dysphagia (difficulty swallowing). The client has been turned...
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A stroke is serious, just like a heart attack, so it's important
to know the signs of stroke and act quickly if you suspect someone
is having one. Stroke is the fourth leading cause of death in the
United States, and causes more serious long-term disabilities than
any other disease. Older people are at higher risk. You can take
steps to lower your chance of having a stroke.
Know the Signs of Stroke
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CASE STUDY CYSTIC FIBROSIS Berial mised o For the Disease Summary for this case study se the CD-ROM this PATIENT CASE cient lent Patient's Chief Complaints Provided by patient's mother: "I noticed a let-down in T's exercise tolerance level a week ago and the last couple of days his cough and sputum production...
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