Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

BDS 1 > BDS1 Biomedical Sciences Qs 2017 > Flashcards

BDS1 Biomedical Sciences Qs 2017 Flashcards

1
Q

Which one of the following is a unique sympathetic function?

a. regulation of blood flow to the GI tract
b. regulation of body temperature
c. regulation of cardiac rate
d. regulation of pupil size
e. regulation of respiratory rate

A

b: regulation of body temperature

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Which of the following statements about glycogenolysis and glucose metabolism is TRUE?

a. Glucose-6-phosphate from liver glycogen usually enters glycolysis
b. Glucose-6-phosphate from muscle glycogen sometimes enters the blood
c. Muscle cytosol contains glucose-6-phosphatase
d. Liver glycogenolysis and glycolysis are not usually active at the same time
e. Muscle glycolysis is inhibited by epinephrine

A

d. Liver glycogenolysis and glycolysis are not usually active at the same time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Medium chain acyl CoA (MCAD) deficiency results in:

a. Increased blood glucose following a meal
b. Increased ketone body synthesis during a fast
c. Decreased levels of liver ATP during a fast
d. Increased gluconeogenesis during a fast
e. Increase ketone body synthesis following a meal

A

c. Decreased levels of liver ATP during a fast

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

In contrast to the somatic nervous system, the autonomic nervous system ________.

a. has both afferent and efferent fibre
b. has two efferent neurons
c. has two afferent neurons
d. is not controlled by the central nervous system (CNS)
e. stimulates its effector cells

A

b. has two efferent neurons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Sympathetic nerves may leave the spinal cord at which vertebrae?

a. first coccyx
b. first lumbar
c. first thoracic
d. second cervical
e. third lumbar

A

c. first thoracic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Which one of the following best describes properties of Beta-blockers?

a. are potent antidepressants
b. attack mainly to the B1 receptors of cardiac muscle
c. have widespread sympathetic effects
d. increase a dangerously low heart rate
e. relax muscles of airways

A

b. attack mainly to the B1 receptors of cardiac muscle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

A pronounced internal elastic membrane and external elastic membrane are distinguishing characteristics of which type of vessel?

a: arteriole
b: capillary
c: elastic artery
d: muscular artery
e: venule

A

d: muscular artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q 
Phosphofructokinase, the major flux-controlling enzyme of glycolysis is allosterically
inhibited by \_\_\_ and activated by \_\_\_.
a. AMP Pi
b. ADP AMP
c. ATP ADP
d. ATP PEP
e. citrate ATP
A

c. ATP ADP

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Autonomic ganglia contain which of the following?
a. an outer connective tissue capsule around the cell bodies of preganglionic motor
neurons
b. both somatic afferent and efferent neurons
c. cell bodies in the ventral horn of the spinal cord
d. cell bodies of motor neurons
e. synapses between postganglionic fibres and their effectors

A

d. cell bodies of motor neurons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Which of the following statements concerning cardiac muscle is correct?

a. All of the Ca2+required for contraction enters a myocyte during the plateau phase of the action potential
b. Heart muscle contracts in response to action potentials in the autonomic nerve fibres
c. The action potential has the same duration as that of skeletal muscle
d. The force of contraction is increased by circulating adrenaline
e. Unlike skeletal muscle troponin is not involved in cardiac muscle contraction

A

d. The force of contraction is increased by circulating adrenaline

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Plasma proteins are not involved in which one of the following processes?

a. Blood clotting
b. Blood viscosity
c. Plasma colloid osmotic pressure
d. Transport of oxygen
e. Transport of hormones

A

d. Transport of oxygen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

White blood cells with receptors for IgE on their membranes are:

a. Basophils
b. Eosinophils
c. Lymphocytes
d. Monocytes
e. Neutrophils

A

a. Basophils

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

The muscle protein which covers active sites on actin filaments at rest is:

a. Actinin
b. Myosin
c. Tropomyosin
d. Tropinin-T
e. Titin

A

c. Tropomyosin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q 
Contraction of the gall bladder and stimulation of enzyme rich pancreatic secretion are the
function of which one of the following?
a. Cholecystokinin
b. Gastrin
c. Motilin
d. Secretin
e. Vasoactive intestinal peptise
A

a. Cholecystokinin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Vagal stimulation results in slowing of heart rate. This is due to increased permeability of
the sinoatrial nodal fibre membrane to which one the following?
a. Calcium
b. Chloride
c. Potassium
d. Sodium
e. Sodium and calcium

A

c. Potassium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

During exercise skeletal muscle blood flow increases 15-25 times the resting value. This
increase is mainly due to which one of the following?
a. Increased arterial blood pressure
b. Increased secretion of catecholamines
c. Local metabolic factors
d. Stimulation of sympathetic vasoconstrictor nerves
e. Stimulation of sympathetic vasodilator nerves

A

c. Local metabolic factors

17
Q 
Which one of the following best describes the difference between total lung capacity and
vital capacity?
a. Functional reserve volume
b. Functional residual capacity
c. Inspiratory reserve volume
d. Residual volume
e. Tidal volume
A

d. Residual volume

18
Q

The shaft of a bone is known by which one of the following terms?

a. diaphysis
b. epiphysis
c. metaphysis
d. osteon
e. periosteum

A

a. diaphysis

19
Q

The function of Vitamin D is best described by which one of the following?

a. Deficiency results in premature calcification of growing bones
b. In excess causes the disease rickets
c. Is essential for the uptake of calcium in the intestine
d. Is produced in the dermis
e. Is required for the incorporation of circulating calcium from the blood into the bones

A

c. Is essential for the uptake of calcium in the intestine

20
Q

Sympathetic division stimulation causes which one of the following?
a. decreased blood glucose, decreased GI peristalsis, and decreased heart rate and blood pressure
b. decreased blood glucose, increased GI peristalsis, and decreased heart rate and
blood pressure
c. decreased blood glucose, increased GI peristalsis, and increased heart rate and blood pressure
d. increased blood glucose, increased GI peristalsis, and decreased heart rate and blood pressure
e. increased blood glucose, decreased GI peristalsis, and increased heart rate and blood pressure

A

e. increased blood glucose, decreased GI peristalsis, and increased heart rate and blood
pressure

21
Q

Which one of the following produces the hormone melatonin?

a. hypothalamus
b. pancreatic gland
c. pineal gland
d. pituitary gland
e. thyroid gland

A

c. pineal gland

22
Q

Amino acids considered nonessential for humans are:

a. generally not provided by the ordinary diet.
b. not necessary in the diet if sufficient amounts of precursors are present.
c. the ones made in specific proteins by posttranslational modifications.
d. the same for adults as for children.
e. those not incorporated into protein

A

b. not necessary in the diet if sufficient amounts of precursors are present.

23
Q

Total lung capacity is directly related to which one of the following?

a. Closing volume
b. Lung compliance
c. Rate of airflow
d. Residual volume
e. Size of airway

A

b. Lung compliance

24
Q

According to which of the following laws, if it were not for pulmonary surfactants, we
should expect the surface tension in a small alveolus to produce greater pressure than in a
larger one, and air would flow from the smaller alveolus into the larger one?
a. Boyle’s law
b. Dalton’s law
c. Henry’s law
d. LaPlace’s law
e. Reynold’s law

A

d. LaPlace’s law

25
Q

The pleural cavity is the potential space between which two pleurae?

a. costal and cupula pleurae
b. costal and diaphragmatic pleurae
c. costal and mediastinal pleurae
d. diaphragmatic and mediastinal pleurae
e. parietal and visceral pleurae

A

e. parietal and visceral pleurae

26
Q

The mode of action of a steroid hormone involves which one of the following?

a. activation of protein kinases
b. binding to calmodulin
c. binding to a cell membrane receptor
d. covalent modification of enzyme activity
e. modifying gene transcription

A

e. modifying gene transcription

27
Q

Fast-twitch skeletal muscle fibres contain which one of the following?

a. a relatively large number of mitochondria and low ATPase activity
b. a relatively small number of mitochondria and low ATPase activity
c. a relatively small number of mitochondria and high ATPase activity
d. a relatively large number of mitochondria and high ATPase activity
e. no mitochondria and high ATPase activity

A

c. a relatively small number of mitochondria and high ATPase activity

28
Q

Influx of what ion causes acetylcholine (Ach) release into the synaptic cleft, prior to ACh
being terminated by acetylcholinesterase (AChE)?
a. Ca++
b. Clc. H+
d. K+
e. Na+

A

a. Ca++

BDS 1 (24 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions