W8

Question 1

The epiglottis….

a. prevents food and water entering the respiratory passages
b. secretes surfactant
c. is composed of smooth muscle
d. is concerned with the exchanged of respiratory gasses

Answer 1

a. prevents food and water entering the respiratory passages

Question 2

When the diaphragm and intercostal muscles contract ….

a. pulmonary air is forced out of the lungs
b. volume of the thoracic cavity increases
c. epiglottis closes
d. secretion of surfactant

Answer 2

b. volume of the thoracic cavity increases

Question 3

The phrenic nerve…

a. stimulates the swallowing reflex
b. supplies the epiglottis
c. stimulates the diaphragm to contract
d. supplies the external intercostal muscles

Answer 3

c. stimulates the diaphragm to contract

Question 4

A respiratory arrest would result from damage to the ….

a. hypothalamus
b. medulla oblongata
c. thalamus
d. cerebellum

Answer 4

b. medulla oblongata

Question 5

In the absence of repiratory surfactant

a. it is difficult to keep the alveoli open
b. the bronchioles relax
c. the alveoli fill with mucus
d. air enters the intrapleural space

Answer 5

a. it is difficult to keep the alveoli open

Question 6

Gases move across the respiratory membrane by …..

a. filtration
b. diffusion
c. osmosis
d. actoive transport

Answer 6

b. diffusion

Question 7

Most carbon dioxide is transported in the blood

a. by haemoglobin
b. as bicarbonate
c. dissolved in the plasma
d. attached to plasma proteins

Answer 7

b. as bicarbonate

Question 8

Identify which has the greatest microbial diversity and beneficial metabolites they produce

a. kefir, kimchi, kombucha, saurcerkraut, greek yoghurt
b, beer, coffee, bread, wine, sour sough
c. non-pasteurised cheese, non-homogenised milk, goats milk, yakult
d. miso, tempeh, tofu, pickles, apple cider vinegar, Vegemite

Answer 8

a. kefir, kimchi, kombucha, saurcerkraut, greek yoghurt