Respiratory rate (multiple choice)

Question 1

The consumption of oxygen and production of carbon dioxide by metabolism within the mitochondria is known as

External respiration

Internal respiration

Cell respiration

Gas transport

Answer 1

Cell respiration

Question 2

The functional unit of the respiratory system is the

Alveolus

Capillary

Villus

Bronchiole

Answer 2

Alveolus

Question 3

The oxygen concentration in atmospheric air is approximately

5%

20%

50%

80%

Answer 3

20%

Question 4

The blood circulation to and from the lungs is known as the

Hepatic portal circulation

Coronary circulation

Systemic circulation

Pulmonary circulation

Answer 4

Pulmonary circulation

Question 5

The substance secreted into the fluid lining the alveoli that prevents their collapse is known as

Cholesterol

CSF

Surfactant

Serous fluid

Answer 5

Surfactant

Question 6

The proportion of a gas in a mixture of gases is known as the

Partial pressure

Proportional pressure

Relative pressure

Hydrostatic pressure

Answer 6

Partial pressure

Question 7

The globular protein responsible for transport of oxygen in blood is known as

Haemacel

Haemoglobin

Albumin

Cyanocobalamine

Answer 7

Haemoglobin

Question 8

The trachea has multiple horseshoe rings supporting the muscle tissue, they are made from

Fibrous connective tissue

Bone

Cartilage

Epithelium

Answer 8

Cartilage

Question 9

The gas exchange process at the level of the capillary and the body tissues is called

External respiration

Internal respiration

Cell respiration

Gas transport

Answer 9

Internal respiration

Question 10

The trachea is lined with

Epithelial Villi

Epithelial microvilli

Ciliated epithelium

Squamous epithelium

Answer 10

Ciliated epithelium

Question 11

Among the tracheal lining cells are mucous producing cells called

Kupfer cells

Columnar cells

Bronchial cells

Goblet cells

Answer 11

Goblet cells

Question 12

The pleural membrane closest to the lung tissue is called

Parietal membrane

Visceral membrane

Peri-pleural membrane

Intra-pleural membrane

Answer 12

Visceral membrane

Question 13

The movement of air into the lungs occurs because

The lung capacity is increased by the diaphragm and intercostal muscles reducing pressure inside the lungs

The lung capacity is decreased by the diaphragm and intercostal muscles increases pressure inside the lungs

Contraction of the intercostal muscles pulls air into the lungs

The action of the diaphragm causes a rise in intrapleural pressure

Answer 13

The lung capacity is increased by the diaphragm and intercostal muscles reducing pressure inside the lungs

Question 14

Air movement in ventilation is based on

Osmotic pressure

Hydrostatic pressure

Pressure gradients

Suction

Answer 14

Pressure gradients

Question 15

The products of cell respiration

Oxygen and water

Carbon dioxide and water

Carbon dioxide and glucose

Carbon dioxide

Answer 15

Carbon dioxide and water

Question 16

The nasal cavity contains narrow passageways lined with moist tissue to warm and humidify the incoming air. These passageways are called:

Nasal turbinates or conchae

Nasal foramina or canals

Nasal meatus

External naris

Answer 16

Nasal turbinates or conchae

Question 17

The structure that protects the tracheal opening from food entrance is called the

vocal cords

false cords

thyroid cartilage

epiglottis

Answer 17

epiglottis

Question 18

The widened section of the trachea that houses the opening is called the

pharynx

larynx

epiglottis

eustachian canal

Answer 18

larynx

Question 19

The nostril is called the

nasal orifice

nasal meatus

external naris

rhinal meatus

Answer 19

external naris

Question 20

The internal architecture of the nasal cavity is formed by which bone

The ethmoid bone

The sphenoid bone

The Mandible

The maxilla

Answer 20

The ethmoid bone