Human Physiology Test

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Human Physiology Test - 3

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Question 1
1 / -0

Anaerobic respiration is found in some bacteria, yeasts and many parasitic animals. Which one of the following statements is true about this type of respiration?

A
Oxygen is required in this type of respiration.

B
This type of respiration takes place in the cytoplasm.

C
There is always a release of carbon dioxide in this type of respiration.

D
Anaerobic respiration provides much more energy as compared to aerobic respiration.

Solution

This statement is true about anaerobic respiration. Anaerobic respiration (both glycolysis and fermentation) takes place in the cytoplasm.
Question 2
1 / -0

Which of the following is/are the posterior opening(s) of the nasal cavities in the human respiratory system that lead(s) into the nasopharynx?

A
Internal nares

B
Nostrils

C
Pharynx

D
Larynx

Solution

Internal nares are the posterior openings of the nasal cavities that lead into the nasopharynx. They serve as a filter for the respiration system. They also provide warmth and moisture to the air.
Question 3
1 / -0

Which of the following cartilages of the larynx is/are leaf shaped, project(s) into the pharynx and made up of elastic cartilage?

A
Thyroid cartilage

B
Cricoid cartilage

C
Corniculate cartilages

D
Epiglottis

Solution

Epiglottis is a leaf shaped cartilage which projects into the pharynx. It is made up of an elastic cartilage. During swallowing, it closes the glottis to check the entry of food into it.
Question 4
1 / -0

A pair of lungs lies in the thoracic cavity. Which of the following internal structures of lungs are without cartilaginous rings?

a. Secondary bronchi
b. Bronchioles
c. Tertiary bronchi

A
Only a

B
Only b

C
Only c

D
Only a and c

Solution

Bronchioles are without cartilaginous rings. They further evolve into alveoli. It is the alveoli where the exchange of oxygen and carbon dioxide takes place.
Question 5
1 / -0

Consider the following statements and choose the correct option.

a. The outer membrane that encloses each lung is called visceral pleura and the inner membrane is called parietal pleura.
b. Lecithin film's function is to lower the surface tension of the alveoli and keep it open.

A
Both the statements are true.

B
Both the statements are false.

C
Statement 'a' is false and 'b' is true.

D
Statement 'b' is false and 'a' is true.

Solution

The outer membrane that encloses each lung is called parietal pleura and the inner membrane is called visceral pleura. A very narrow space called pleural cavity is there between these two membranes.
Question 6
1 / -0

Which of the following is a characteristic feature of the left lung in the human body?

A
It is larger and heavier and weighs about 700 g.

B
It is broader than the right lung.

C
It does not have cardiac notch.

D
It has two lobes and one fissure.

Solution

Left lung has two lobes - superior lobe and inferior lobe and one fissure - oblique fissure.
Question 7
1 / -0

Consider the following statements and choose the correct option.

a. About 7% of oxygen in the blood is dissolved in the plasma which carries oxygen to the body cells.
b. About 23% of carbon dioxide is carried by haemoglobin as carbaminohaemoglobin.

A
Both the statements are true.

B
Both the statements are false.

C
Statement 'a' is false and 'b' is true.

D
Statement 'b' is false and 'a' is true.

Solution

About 3% of oxygen in the blood is dissolved in the plasma which carries oxygen to the body cells. Blood plasma has about 7% of carbon dioxide dissolved in it.
Question 8
1 / -0

Which of the following steps of respiration occurring in cytoplasm does not require oxygen and consumes ATP molecules?

A
Glycolysis

B
Electron transport chain

C
Oxidative phosphorylation

D
Kerbs cycle

Solution

Glycolysis occurs in cytoplasm and does not require oxygen. It consumes ATP molecules. Water and ATP molecules are released in this process.
Question 9
1 / -0

Consider the following statements and choose the correct option.

a. Respiratory substrates are those organic substances that can be catabolised to liberate energy inside the living cells.
b. Almost the entire breathing process in pregnant women is through lateral movement of thorax.

A
Both the statements are true.

B
Both the statements are false.

C
Statement 'a' is true and 'b' is false.

D
Statement 'b' is true and 'a' is false.

Solution

Respiratory substrates are those organic substances that can be catabolised to liberate energy inside the living cells. Glucose is the most common respiratory substrate.

Almost the entire breathing process in pregnant women is through lateral movement of thorax.
Question 10
1 / -0

Breathing is affected by the expansion and contraction of lungs. Which of the following muscles contract and pull the ribs and sternum upward and outward, thus increasing the volume of thoracic cavity?

A
Internal intercostal muscles

B
External intercostal muscles

C
Abdominal muscles

D
None of these

Solution

External intercostal muscles contract and pull the ribs and sternum upward and outward. This process increases the volume of thoracic cavity. These muscles help in quiet and forced inhalation.

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Human Physiology Test - 3

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Human Physiology Test - 3

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Question 1

Oxygen is required in this type of respiration.

This type of respiration takes place in the cytoplasm.

There is always a release of carbon dioxide in this type of respiration.

Anaerobic respiration provides much more energy as compared to aerobic respiration.

Solution

Question 2

Internal nares

Nostrils

Pharynx

Larynx

Solution

Question 3

Thyroid cartilage

Cricoid cartilage

Corniculate cartilages

Epiglottis

Solution

Question 4

Only a

Only b

Only c

Only a and c

Solution

Question 5

Both the statements are true.

Both the statements are false.

Statement 'a' is false and 'b' is true.

Statement 'b' is false and 'a' is true.

Solution

Question 6

It is larger and heavier and weighs about 700 g.

It is broader than the right lung.

It does not have cardiac notch.

It has two lobes and one fissure.

Solution

Question 7

Both the statements are true.

Both the statements are false.

Statement 'a' is false and 'b' is true.

Statement 'b' is false and 'a' is true.

Solution

Question 8

Glycolysis

Electron transport chain

Oxidative phosphorylation

Kerbs cycle

Solution

Question 9

Both the statements are true.

Both the statements are false.

Statement 'a' is true and 'b' is false.

Statement 'b' is true and 'a' is false.

Solution

Question 10

Internal intercostal muscles

External intercostal muscles

Abdominal muscles

None of these

Solution

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