Circulatory Function, Part 1

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What is the primary function of the circulatory system?

To transport oxygen and nutrients to cells (correct)
To regulate body temperature
To produce energy for the body
To eliminate waste products from the body

What would happen if oxygen and nutrients aren't transported to cells?

The cells would remain unaffected
The cells would start to develop
The cells may die or become damaged (correct)
The cells would become stronger

What is the function of the atria in the heart?

To produce hormones
To collect blood returning to the heart from the rest of the body (correct)
To regulate blood pressure
To pump blood to the rest of the body

What is the main problem that may result if the circulatory system is not functioning properly?

Many problems may result (A) Signup and view all the answers

What is transported to the periphery to be dissipated in the external environment?

Core heat (A) Signup and view all the answers

What is the path of blood flow through the heart?

Right aorta → tricuspid valve → right ventricle → lungs (A) Signup and view all the answers

Which of the following factors affects blood pressure through adjusting sodium and water excretion?

Kidneys (D) Signup and view all the answers

What is the primary function of the renin-angiotensin-aldosterone system (RAAS) in relation to blood pressure regulation?

To adjust blood volume and vessel constriction (D) Signup and view all the answers

Which of the following is a soft risk factor for heart disease?

Stress (C) Signup and view all the answers

A person with a waist circumference of 38 inches is at a higher risk of developing hypertension due to?

Centrally located fat (B) Signup and view all the answers

What is the primary focus in Stage 1 of hypertension management?

Lifestyle modifications (B) Signup and view all the answers

Which of the following lifestyle changes can help reduce blood pressure?

Increasing potassium intake (B) Signup and view all the answers

What is the main function of the arteries in the circulatory system?

To carry blood to tissues for tissue perfusion (D) Signup and view all the answers

What is the primary component of the middle layer of blood vessels?

Smooth muscle (C) Signup and view all the answers

What is the term for the resistance that blood encounters as it is pumped through vessels?

Peripheral vascular resistance (D) Signup and view all the answers

What is the role of endothelial cells in the inner layer of blood vessels?

To provide a smooth, slippery surface to prevent platelet adherence and blood clotting (C) Signup and view all the answers

What is the purpose of antihypertensive medications in Stage 2 of hypertension management?

To focus on one of the aspects that affect blood pressure, such as heart rate or cardiac contractility (D) Signup and view all the answers

What is the role of cholesterol in the body?

As an essential component of cell membranes and steroid hormones (A) Signup and view all the answers

What is the primary reason for high blood lipid levels in individuals with diabetes mellitus?

The inability of glucose to enter cells causes the breakdown of fat, leading to high blood lipid levels (C) Signup and view all the answers

What is the main goal for LDL cholesterol levels?

<100 mg/dL (C) Signup and view all the answers

What is the term for the hardening of arteries?

Arteriosclerosis (A) Signup and view all the answers

What happens to LDL cholesterol in the process of atherosclerosis?

It is deposited under the endothelium and digested by macrophages (B) Signup and view all the answers

What is the result of lesions developing in the artery?

The endothelial layer is damaged and attracts platelets (D) Signup and view all the answers

What is the risk of atherosclerosis?

Stroke and kidney damage (B) Signup and view all the answers

What is the main reason for heart attacks and strokes?

Blockage in arteries (D) Signup and view all the answers

What determines the symptoms of arterial blockage?

Location of the blockage (A) Signup and view all the answers

What is the term for poor blood flow that can lead to tissue damage?

Ischemia (D) Signup and view all the answers

What is the term for permanent damage due to lack of oxygen and blood flow?

Infarction (C) Signup and view all the answers

What is the term for the circulation of blood in certain tissues where there are little connecting channels?

Collateral circulation (C) Signup and view all the answers

What is the goal of lifestyle modifications in managing arterial blockage?

To control diet and lower cholesterol (C) Signup and view all the answers