systems physiology'

Question 1

what lines the lungs and alveoli?

Answer 1

simple squamous

Question 2

parathyroid hormone: 70%

Answer 2

stimulates osteoclastic bone resorption

Question 3

calcitonin is a relatively small polypeptide which:

Answer 3

decreases bone resorption by inhibiting osteoclast activity and increases calcium excretion by the kidneys

Question 4

in smooth muscle contraction, calcium binds to

Answer 4

troponin

Question 5

the bronchus, pulmonary artery and pulmonary vein are in close proximity to one another in the?

Answer 5

hilum

Question 6

which best describes the space that the heart occupies?

Answer 6

middle mediastinum

Question 7

what constitutes the primary muscle of respiration?

Answer 7

diaphragm

Question 8

small increases in the pulmonary venous pressure can result in considerable changes to the driving pressure because?

Answer 8

the pressure difference between the pulmonary artery and capillary is small

Question 9

how and why can increased alveolar pressure affect alveolor blood flow?

Answer 9

decreases blood flow by compressing alveolar vessels

Question 10

during normal quiet breathing, the volume of air that is moved between inspiration and expiration is known as

Answer 10

tidal volume

Question 11

what type of collagen is most abundant in the basement membrane?

Answer 11

type IV

Question 12

what type of tissue holds most organs together?

Answer 12

loose connective tissue

Question 13

which of the following is not part of the epidermis?

Answer 13

Reticulus dermis

Question 14

why is right ventricle less muscular than left ventricle

Answer 14

LV pumps blood around whole body

Question 15

what does left atrium receive?

Answer 15

four pulmonary veins

Question 16

what cannot be measured by a spirometer?

Answer 16

residual volume

Question 17

which part of the ECG represents the atrial contractions?

Answer 17

P wave

Question 18

According to frank starling’s law, what affects force of ventricular muscle contraction?

Answer 18

venous return

Question 19

what type of bone is first laid down?

Answer 19

woven

Question 20

tropomyosin blocks the myosin binding site

Answer 20

in the absence of calcium

Question 21

which cavity is the heart in?

Answer 21

middle mediastinum

Question 22

what type of cell lines blood vessels and alveoli?

Answer 22

simple squamous

Question 23

what cell synthesises collagens, elastin and proteoglycans in the skin:

Answer 23

fibroblasts

Question 24

what collagen makes up the basement membrane?

Answer 24

type IV

Question 25

the lungs has non-respiratory function. which of these is NOT a non-respiratory function?

Answer 25

Erythroprotein

Question 26

During inspiration pleural pressure

Answer 26

becomes more negative