1.
Which side of the heart is responsible for pumping oxygenated blood into the body?
Correct Answer
B. Left
Explanation
The left side of the heart is responsible for pumping oxygenated blood into the body. The left atrium receives oxygenated blood from the lungs and then passes it to the left ventricle. The left ventricle then pumps this oxygenated blood out to the rest of the body through the aorta. The right side of the heart, on the other hand, pumps deoxygenated blood to the lungs to be oxygenated.
2.
What are the cellular elements of the blood that are suspended in liquid?
Correct Answer
A. Plasma
Explanation
Plasma is the correct answer because it is the liquid component of blood that suspends the cellular elements. It is a yellowish fluid that makes up about 55% of the total blood volume and contains various proteins, electrolytes, hormones, and waste products. Plasma helps transport nutrients, hormones, and waste materials throughout the body, and also plays a crucial role in maintaining blood pressure and regulating body temperature.
3.
What is the function of white blood cells?
Correct Answer
D. Fights foreign cells such as bacteria
Explanation
White blood cells, also known as leukocytes, are responsible for defending the body against infections and diseases. They play a crucial role in the immune system by identifying and destroying foreign cells, such as bacteria, viruses, and other pathogens. This process involves various mechanisms, including engulfing and digesting the foreign cells, producing antibodies, and releasing chemicals to neutralize the invaders. Therefore, the function of white blood cells is to fight against foreign cells like bacteria and protect the body from infections.
4.
Name the main vessels used to carry blood away from the heart
Correct Answer
Arteries
Artery
Explanation
Arteries are the main vessels used to carry blood away from the heart. They have thick and elastic walls that allow them to withstand the high pressure of blood being pumped from the heart. Arteries branch out into smaller vessels called arterioles, which then further divide into capillaries, where the exchange of oxygen, nutrients, and waste products occurs. The main function of arteries is to deliver oxygenated blood to the various organs and tissues in the body. The term "artery" refers to a single blood vessel, while "arteries" is the plural form.
5.
What are the 3 major components of the heart?
Correct Answer
C. Blood, blood vessel, heart
Explanation
The correct answer is blood, blood vessel, heart. The heart is composed of different components, including blood, blood vessels, and the heart itself. Blood is essential for carrying oxygen and nutrients to different parts of the body. Blood vessels, such as arteries and veins, transport the blood throughout the body. The heart acts as a pump, circulating the blood and ensuring its flow to all organs and tissues. Therefore, these three components are crucial for the proper functioning of the cardiovascular system.
6.
What are the product of tidal volume and respiratory frequency?
Correct Answer
Minute volume
Explanation
The product of tidal volume and respiratory frequency is known as minute volume. Minute volume refers to the total volume of air that is moved in and out of the lungs in one minute. It is calculated by multiplying the tidal volume (the amount of air inhaled or exhaled in one breath) by the respiratory frequency (the number of breaths taken per minute). This measurement is important in assessing lung function and respiratory efficiency.
7.
Name the three components found in the blood.
Correct Answer
C. White blood cells, red blood cells, platelets
Explanation
The correct answer is white blood cells, red blood cells, and platelets. These three components are commonly found in the blood. White blood cells are responsible for fighting off infections and diseases. Red blood cells carry oxygen to the body's tissues and remove carbon dioxide. Platelets help in blood clotting to prevent excessive bleeding.
8.
Which side of the heart pumps blood to the lungs?
Correct Answer
Right
Explanation
The right side of the heart pumps blood to the lungs. This is because the right atrium receives deoxygenated blood from the body and pumps it into the right ventricle. The right ventricle then contracts and pushes the deoxygenated blood into the pulmonary artery, which carries it to the lungs for oxygenation. Once the blood is oxygenated, it returns to the left side of the heart to be pumped out to the rest of the body.
9.
What is the purpose of red blood cells?
Correct Answer
B. Carries oxygen in the blood to the cells
Explanation
Red blood cells have a crucial role in carrying oxygen from the lungs to the body's tissues and organs. They contain a protein called hemoglobin, which binds to oxygen in the lungs and releases it in the capillaries, where it can be utilized by the cells for various metabolic processes. This oxygen transport is essential for the proper functioning of all body systems and maintaining overall health.
10.
The total amount of air inspired or expired in a minute is called the respiratory ___________?
Correct Answer
Rate
Frequency
Explanation
The total amount of air inspired or expired in a minute is called the respiratory rate or frequency. This refers to the number of breaths taken per minute. It is an important measure of respiratory function and can be used to assess the efficiency of breathing.
11.
What are the functional units of the lungs where gas exchange actually occurs?
Correct Answer
C. Alveoli
Explanation
The functional units of the lungs where gas exchange actually occurs are called alveoli. These tiny air sacs are located at the end of the bronchioles and are surrounded by capillaries. Oxygen from the inhaled air diffuses across the thin walls of the alveoli into the capillaries, while carbon dioxide, a waste product, moves in the opposite direction from the capillaries into the alveoli to be exhaled. This exchange of gases in the alveoli is crucial for maintaining proper oxygen levels in the body and removing carbon dioxide waste.
12.
Each side of the heart contains these 2 chambers:
Correct Answer
A. Atrium and ventricle
Explanation
The correct answer is atrium and ventricle because the heart is divided into two sides, the left and right, and each side contains an atrium and a ventricle. The atrium receives blood from the body or lungs, while the ventricle pumps the blood out to the body or lungs. This division of chambers allows for efficient circulation of oxygenated and deoxygenated blood throughout the body.
13.
What is the main function of platelets?
Correct Answer
A. Blood clotting
Explanation
Platelets are small, colorless cell fragments that play a crucial role in the process of blood clotting. When there is an injury or damage to a blood vessel, platelets gather at the site and form a plug to stop bleeding. They release chemicals that attract more platelets and help in the formation of a clot. This clotting mechanism is essential for preventing excessive bleeding and promoting wound healing. Therefore, the main function of platelets is blood clotting.
14.
What is the term for the number of breaths taken per minute?
Correct Answer
C. Minute volume
Explanation
Minute volume refers to the amount of air that is breathed in or out of the lungs in one minute. It is calculated by multiplying the tidal volume (the amount of air inhaled or exhaled in one breath) by the respiratory rate (the number of breaths taken per minute). Therefore, minute volume is the correct term for the number of breaths taken per minute.