McGraw Hill BS2050 Revision Quiz

Question 1

Match the pancreatic secretion with the correct function:
trypsin
pancreatic amylase
pancreatic lipase
ribonuclease
deoxyribonuclease
bicarbonate

Answer 1

digests proteins
digests carbohydrates
digests lipids
digests RNA
digests DNA
neutralises acid

Question 2

The enteric plexus is composed of:

Answer 2

the myenteric and submucosal plexus

Question 3

What will occur if the ductus arteriosus remains open (patent) rather than closing off soon after birth?

Answer 3

won’t form ligamentum arteriosum
blood flows from aorta to pulmonary arteries, increasing pressure in the pulmonary circuit
mixing of oxygenated and deoxygenated blood
cause pulmonary hypertension and heart failure

Question 4

If levels of prolactin hormone are adequate for the stimulation of milk production, what prevents milk production from taking place during pregnancy?

Answer 4

elevated levels of oestrogen and progesterone

Question 5

The pancreatic Islets of Langerhans are exocrine or endocrine in function?

Answer 5

endocrine

Question 6

2 effects of hypothyroidism and a possible cause

Answer 6

decreased metabolic rate, weight gain
iodine deficiency

Question 7

2 effects of hyperthyroidism and a possible cause

Answer 7

increased metabolic rate, weight loss
Grave’s disease

Question 8

what is the effect of pancreatic insulin

Answer 8

increased uptake of glucose and amino acids

Question 9

what is the effect of pancreatic glucagon

Answer 9

increased breakdown of glycogen, increased blood-glucose levels

Question 10

what is the effect of pancreatic somatostatin

Answer 10

inhibition of insulin and glucagon secretion

Question 11

A lactation product that is high in protein but low in fat is:

Answer 11

colostrum

Question 12

A lactation product that contains maternal antibodies is:

Answer 12

both milk and colostrum

Question 13

Suckling stimulates mechanosensory receptors that activate a reflex response to release what hormone from where

Answer 13

oxytocin from the posterior pituitary

Question 14

Lactation is suppressed before birth due to suppression of milk synthesis by

Answer 14

placental hormones

Question 15

When body metabolism is low, the hypothalamus secretes:

Answer 15

TRH (thyrotropin-releasing hormone)

Question 16

After travelling down the hypophyseal portal vein, TRH stimulates the anterior pituitary to release:

Answer 16

TSH (thyroid-stimulating hormone)

Question 17

TSH reaches the thyroid gland where it stimulates the secretion of:

Answer 17

T3 and T4

Question 18

T3 and T4 not only increase metabolic rate of the body but inhibits:

Answer 18

TRH release from the hypothalamus as a part of a negative feedback loop

Question 19

This disease may result from insufficient surfactant production by the alveoli

Answer 19

infant respiratory distress syndrome

Question 20

This disease occurs when foetal RBCs are destroyed, releasing bilirubin faster than the liver can eliminate it

Answer 20

Physiological jaundice

Question 21

Which disease is characterised by increased BP, edema and proteinuria during late pregnancy, and what may this disease develop into which may lead to convulsions and coma?

Answer 21

Preeclampsia, may lead to Eclampsia

Question 22

What term is used to refer to the implantation of a blastocyst in a location other than the uterus? (most commonly implanted in the uterine tube)

Answer 22

Ectopic pregnancy

Question 23

The dorsal roots contain which kind of axon?

Answer 23

Sensory axons

Question 24

The ventral roots contain which kind of axon?

Answer 24

Motor axons

Question 25

What is the simplest reflex where muscles contract in response to excessive stretch?

Answer 25

Stretch reflex

Question 26

What is the reflex that prevents contracting muscles from applying tension to tendons?

Answer 26

Golgi tendon reflex

Question 27

What kind of reflex removes a body part from a painful stimulus?

Answer 27

Withdrawal reflex

Question 28

What kind of reflex responds to a withdrawal reflex, causing extension of the opposite limb?

Answer 28

Cross extensor reflex

Question 29

The resistance of a vessel is inversely proportional to:

Answer 29

the fourth power of the diameter of the vessel

Question 30

Once foetal lungs become functional, there is no need for blood to flow from the right side of the heart to the left side of the heart. In other words there is no need for the :

Answer 30

Foramen ovale

Question 31

Which enzyme will be elevated in a new mother as her body prepares for breastfeeding?

Answer 31

Prolactin