CCMA NHA Test Quiz

2.

Which of these supply the liver?

Renal vein
Renal artery
Hepatic artery
Hepatic vein

Correct Answer

A. Hepatic artery

Explanation

The hepatic artery supplies blood to the liver. It carries oxygenated blood from the heart to the liver, providing the liver with the necessary oxygen and nutrients for its metabolic functions. The hepatic artery is an essential component of the liver's blood supply, working in conjunction with the hepatic portal vein, which brings nutrient-rich blood from the gastrointestinal tract to the liver. Together, these blood vessels ensure the liver receives a continuous supply of oxygen and nutrients for its vital functions.

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3.

Which of these drains the kidneys?

Renal artery
Renal vein
Aorta
Capillaries

Correct Answer

A. Renal vein

Explanation

The renal vein drains the kidneys. It is responsible for carrying deoxygenated blood, waste products, and excess water from the kidneys back to the heart. This blood is then filtered by the kidneys to remove toxins and maintain the body's fluid balance. The other options listed (renal artery, aorta, and capillaries) are involved in the blood supply to the kidneys but do not directly drain them.

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4.

What is the product of heart rate and peripheral resistance?

Palpitation
Breathing
Cardiac output
Inspiration

Correct Answer

A. Cardiac output

Explanation

The product of heart rate and peripheral resistance is known as cardiac output. Cardiac output is the amount of blood that the heart pumps in one minute and is calculated by multiplying the heart rate (the number of times the heart beats per minute) by the peripheral resistance (the resistance to blood flow in the blood vessels). This measure is important in assessing the overall function of the heart and the efficiency of blood circulation in the body.

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5.

What is the number of teeth in adult humans?

24 teeth
32 teeth
45 teeth
55 teeth

Correct Answer

A. 32 teeth

Explanation

Adult humans typically have 32 teeth. This includes 8 incisors, 4 canines, 8 premolars, and 12 molars (including 4 wisdom teeth). These teeth are important for chewing and breaking down food, as well as for speech and maintaining the structure of the face.

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6.

Where does erythropoiesis take place?

Liver
Bone marrow
Brainstem
Kidney

Correct Answer

A. Bone marrow

Explanation

Erythropoiesis is the process of producing red blood cells. It takes place in the bone marrow, specifically in the spongy or cancellous bone. The bone marrow is responsible for producing all types of blood cells, including erythrocytes (red blood cells). The bone marrow contains stem cells that differentiate into erythroblasts, which then mature into red blood cells. The liver and kidney also play a role in erythropoiesis by producing and releasing erythropoietin, a hormone that stimulates red blood cell production. However, the actual process of erythropoiesis occurs in the bone marrow.

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7.

Which of these secretes erythropoietin?

Liver
Bone marrow
Kidney
Lungs

Correct Answer

A. Kidney

Explanation

The kidney secretes erythropoietin. Erythropoietin is a hormone that stimulates the production of red blood cells in the bone marrow. The kidney detects low oxygen levels in the blood and releases erythropoietin to stimulate the production of more red blood cells, which carry oxygen to the body's tissues. This hormone plays a crucial role in maintaining the body's oxygen balance and is primarily produced by the kidneys.

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8.

Which of these is not active in respiration?

Lungs
Bronchi
Alveoli
Liver

Correct Answer

A. Liver

Explanation

The liver is not directly involved in the process of respiration. Respiration primarily occurs in the lungs, where oxygen is taken in and carbon dioxide is expelled. The bronchi and alveoli are structures within the lungs that facilitate the exchange of gases. The liver, on the other hand, is responsible for various metabolic functions such as detoxification, storage of nutrients, and production of bile. While the liver plays a crucial role in overall metabolism, it is not directly involved in the process of respiration.

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9.

Which of these contain the largest form of mitochondria?

Liver
Neurons
Cardiac cells
Nephrons

Correct Answer

A. Cardiac cells

Explanation

Cardiac cells contain the largest form of mitochondria. Mitochondria are responsible for producing energy in cells through a process called cellular respiration. Cardiac cells are found in the heart, which requires a constant and high supply of energy to function properly. Therefore, it makes sense that cardiac cells would have larger mitochondria to meet the energy demands of the heart.

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10.

Which of these is not a lymphatic structure?

Thymus
Spleen
Tonsils
Thorax

Correct Answer

A. Thorax

Explanation

The thorax is not a lymphatic structure. The thymus, spleen, and tonsils are all lymphatic structures that play important roles in the immune system. The thymus is responsible for the development and maturation of T-cells, the spleen filters the blood and helps to remove old or damaged red blood cells, and the tonsils help to trap and remove pathogens that enter the body through the mouth and nose. The thorax, on the other hand, is a region of the body that contains vital organs such as the heart and lungs, but it is not directly involved in the lymphatic system.

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CCMA NHA Test Quiz

What is the total number of bones in the human body?

Quiz Preview

Which of these supply the liver?

Which of these drains the kidneys?

What is the product of heart rate and peripheral resistance?

What is the number of teeth in adult humans?

Where does erythropoiesis take place?

Which of these secretes erythropoietin?

Which of these is not active in respiration?

Which of these contain the largest form of mitochondria?

Which of these is not a lymphatic structure?