The Circulatory System 1 and 2 term 1
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Questions and Answers

The circulatory system is the only system responsible for transporting materials in the body.?

False

Blood is a transport medium for both dissolved and suspended materials?

True

The circulatory system primarily consists of the heart and the blood vessels?

True

The circulatory system is responsible for regulating cardiac output and blood pressure?

<p>True</p> Signup and view all the answers

Blood composition does not include cellular constituents?

<p>False</p> Signup and view all the answers

Blood vessels are a complex network of conduits through which blood is carried from the heart to all parts of the body and back to the heart.

<p>True</p> Signup and view all the answers

The circulatory system also serves the function of transporting nutrients, electrolytes, hormones, and metabolic wastes in the body.

<p>True</p> Signup and view all the answers

The circulatory system does not play a role in regulating the body's internal environment, such as pH and electrolyte balance.

<p>False</p> Signup and view all the answers

Blood constitutes approximately 10% of body weight.

<p>False</p> Signup and view all the answers

Plasma consists of around 92% water and 7% dissolved solutes and specialized proteins.

<p>True</p> Signup and view all the answers

Red blood cells, white blood cells, and platelets are the formed elements suspended in liquid plasma.

<p>True</p> Signup and view all the answers

The heart does not serve as a pump that generates the cardiac output & pressure gradient needed for blood to flow to organs & tissues.

<p>False</p> Signup and view all the answers

Blood does not carry leukocytes, cytokines, and complement that act to protect against invading pathogens.

<p>False</p> Signup and view all the answers

The circulatory system does not help in diverting blood to cool or warm the body for temperature regulation.

<p>False</p> Signup and view all the answers

O2 and CO2 are not transported by the circulatory system.

<p>False</p> Signup and view all the answers

Which of the following is NOT a function of the circulatory system?

<p>Digestion of nutrients</p> Signup and view all the answers

What percentage of the body weight does blood constitute?

<p>Approximately 8%</p> Signup and view all the answers

What is the primary function of platelets in the circulatory system?

<p>Mediating blood clotting to prevent bleeding</p> Signup and view all the answers

What is the approximate total volume of blood in males?

<p>5-6 litres</p> Signup and view all the answers

Which component constitutes the majority of plasma?

<p>Water</p> Signup and view all the answers

What are the formed elements suspended in liquid plasma?

<p>Red blood cells and leukocytes</p> Signup and view all the answers

What does the circulatory system primarily transport for excretion?

<p>Metabolic wastes</p> Signup and view all the answers

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

<p>Protecting against invading pathogens</p> Signup and view all the answers

Which organ do metabolic wastes get transported to for excretion by the circulatory system?

<p>Kidneys</p> Signup and view all the answers

What is the primary function of the heart in the circulatory system?

<p>Generating the cardiac output &amp; pressure gradient needed for blood flow</p> Signup and view all the answers

What is the primary function of the circulatory system?

<p>Transporting nutrients, electrolytes, hormones, and metabolic wastes</p> Signup and view all the answers

Which of the following is a formed element suspended in liquid plasma?

<p>Leukocytes</p> Signup and view all the answers

What is the major composition of plasma?

<p>Water and dissolved solutes</p> Signup and view all the answers

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

<p>Protecting against invading pathogens</p> Signup and view all the answers

What is the characteristic function of the heart in the circulatory system?

<p>Generating cardiac output and pressure gradient</p> Signup and view all the answers

Which component of the circulatory system is responsible for carrying oxygen and carbon dioxide?

<p>Red blood cells</p> Signup and view all the answers

What is the primary role of blood vessels in the circulatory system?

<p>Carrying blood from the heart to all parts of the body</p> Signup and view all the answers

Which statement best describes the composition of blood?

<p>Red blood cells, white blood cells, and platelets are present in blood.</p> Signup and view all the answers

What is the primary function of the vascular system in the circulatory system?

<p>Carrying blood from the heart to all parts of the body</p> Signup and view all the answers

What is the primary function of plasma in the circulatory system?

<p>Transporting dissolved or suspended materials</p> Signup and view all the answers

What is the approximate total volume of blood in females?

<p>4-5 liters</p> Signup and view all the answers

Which component constitutes the majority of plasma in blood?

<p>Water</p> Signup and view all the answers

What is the primary function of leukocytes in the circulatory system?

<p>Protecting against invading pathogens</p> Signup and view all the answers

Which organ do metabolic wastes get transported to for excretion by the circulatory system?

<p>Kidneys</p> Signup and view all the answers

What percentage of the body weight does blood constitute?

<p>~8%</p> Signup and view all the answers

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

<p>Mediating blood clotting</p> Signup and view all the answers

Which statement best describes the composition of blood?

<p>~60% plasma and ~40% formed elements</p> Signup and view all the answers

Blood vessels are responsible for which function in the circulatory system?

<p>Providing a network for blood flow</p> Signup and view all the answers

Which of the following is NOT a function of the circulatory system?

<p>Digesting food</p> Signup and view all the answers

What is the characteristic function of the heart in the circulatory system?

<p>Generating cardiac output &amp; pressure gradient</p> Signup and view all the answers

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

<p>To aid in blood clotting and wound healing</p> Signup and view all the answers

What is the primary function of plasma in the circulatory system?

<p>To carry dissolved solutes and specialized proteins</p> Signup and view all the answers

What organ do metabolic wastes get transported to for excretion by the circulatory system?

<p>Kidneys</p> Signup and view all the answers

What is the characteristic function of the heart in the circulatory system?

<p>Pumping blood to all parts of the body</p> Signup and view all the answers

What is the major composition of plasma?

<p>Water and dissolved solutes</p> Signup and view all the answers

Which component constitutes the majority of plasma?

<p>Water</p> Signup and view all the answers

What is the approximate total volume of blood in males?

<p>$5$ liters</p> Signup and view all the answers

What is the primary role of blood vessels in the circulatory system?

<p>Conduit for blood flow to all parts of the body</p> Signup and view all the answers

What is the primary function of the circulatory system?

<p>Transporting nutrients, electrolytes, and metabolic wastes</p> Signup and view all the answers

Describe the major components of the circulatory system.

<p>Blood, heart, blood vessels</p> Signup and view all the answers

What is the composition of blood and the main functions of its solute & cellular constituents?

<p>Blood composition includes plasma and formed elements. Plasma contains water, electrolytes, and proteins, while formed elements include red blood cells, white blood cells, and platelets. The solute and cellular constituents of blood have various functions including oxygen transport, immune response, and clotting.</p> Signup and view all the answers

Describe the location & gross anatomy of the heart.

<p>The heart is located in the chest, between the lungs and above the diaphragm. It has four chambers: two atria and two ventricles.</p> Signup and view all the answers

Describe the cardiac cell types & their characteristic properties & functions, and the cardiac cycle.

<p>Cardiac cell types include pacemaker cells, conducting cells, and contractile cells. Pacemaker cells generate electrical impulses, conducting cells distribute the impulses, and contractile cells cause the heart to pump. The cardiac cycle consists of diastole and systole, representing the relaxation and contraction of the heart chambers.</p> Signup and view all the answers

Describe the structure & function of the various segments of the blood vessel or vascular system.

<p>The blood vessel system includes arteries, veins, and capillaries. Arteries carry blood away from the heart, veins carry blood toward the heart, and capillaries facilitate the exchange of nutrients and waste products between blood and tissues.</p> Signup and view all the answers

Give an account of the mechanisms involved in the regulation of cardiac output & blood pressure.

<p>Mechanisms involved in the regulation of cardiac output and blood pressure include neural and hormonal control. Neural control involves the autonomic nervous system, while hormonal control involves hormones such as adrenaline and aldosterone.</p> Signup and view all the answers

What are the functions of the circulatory system?

<p>Transportation, Regulation, Protection</p> Signup and view all the answers

What are the components of blood?

<p>Plasma, Formed elements (red blood cells, white blood cells, platelets)</p> Signup and view all the answers

What is the approximate total volume of blood in males?

<p>5-6 litres</p> Signup and view all the answers

What percentage of the body weight does blood constitute?

<p>Approximately 8%</p> Signup and view all the answers

What are the primary functions of plasma in the circulatory system?

<p>Transport of nutrients, electrolytes, hormones, metabolic wastes</p> Signup and view all the answers

What is the characteristic function of the heart in the circulatory system?

<p>Generating cardiac output &amp; pressure gradient for blood flow</p> Signup and view all the answers

What role do leukocytes play in the circulatory system?

<p>Carrying out immunity</p> Signup and view all the answers

What is the primary function of platelets in the circulatory system?

<p>Mediating blood clotting to prevent bleeding or haemorrhage</p> Signup and view all the answers

What is the primary role of blood vessels in the circulatory system?

<p>Carrying and distributing blood from the heart to all parts of the body</p> Signup and view all the answers

What are the components of formed elements in blood?

<p>Red blood cells, white blood cells, platelets</p> Signup and view all the answers

Study Notes

Circulatory System Overview

  • The circulatory system is responsible for transporting materials in the body.
  • It consists of the heart and blood vessels.

Blood Composition

  • Blood constitutes approximately 10% of body weight.
  • Plasma makes up around 92% of blood, consisting of water (92%) and dissolved solutes and specialized proteins (7%).
  • Formed elements suspended in plasma include red blood cells, white blood cells, and platelets.

Functions of the Circulatory System

  • Transports nutrients, electrolytes, hormones, and metabolic wastes in the body.
  • Regulates cardiac output and blood pressure.
  • Plays a role in regulating the body's internal environment, such as pH and electrolyte balance.

Heart Function

  • The heart serves as a pump that generates the cardiac output and pressure gradient needed for blood to flow to organs and tissues.

Platelet Function

  • The primary function of platelets is to facilitate blood clotting.

Leukocyte Function

  • Leukocytes play a role in protecting against invading pathogens.

Blood Vessel Function

  • Blood vessels form a complex network of conduits through which blood is carried from the heart to all parts of the body and back to the heart.

Oxygen and Carbon Dioxide Transport

  • The circulatory system transports oxygen and carbon dioxide.

Waste Removal

  • Metabolic wastes get transported to the kidneys for excretion by the circulatory system.

Primary Function of the Circulatory System

  • The primary function of the circulatory system is to transport materials in the body.

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The Circulatory System 1 & 2 (2023-24) PDF

Description

This quiz covers the lecture series on the circulatory system, including the components of the circulatory system, composition of blood, gross structure of the heart, and cardiac cell types. It provides an overview of the main functions and characteristics of these components.

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