BMS191 : BMS191 13 May 2010
Slide 2 : Which of the following is consistent with homeostasis?
as body temperature rises, sweating occurs to cool the body
when a person drinks large quantities of water, urine output decreases to raise blood volume
elevated blood glucose levels cause insulin secretion to decline
decreases in blood pressure cause a corresponding decrease in heart rate
as blood pressure falls, blood flow to the heart decreases
Slide 3 : Which of the following describes the position of the nose?
inferior to the chin
superior to the mouth
posterior to the ears
lateral to the eyes
superior to the forehead
Slide 4 : The wall of the abdominopelvic cavity is lined by a serous membrane called the
visceral pleural membrane.
parietal peritoneum.
visceral mediastinal membrane.
visceral peritoneum
epicardium.
Slide 5 : A vertical plane that separates the body into right and left portions is called a _____ plane.
sagittal
transverse
frontal
horizontal
coronal
Slide 6 : A red blood cell that is placed in a hypertonic solution,
gains water.
loses water.
floats.
ruptures.
neither gains nor loses water.
Slide 7 : Which of the following will increase the rate of diffusion?
an increase in the viscosity of the solvent
an increase in the temperature
an increase in the molecular weight of the diffusing particles
an increase in the distance the molecules have to travel
all of the above
Slide 8 : A cell that produces many proteins for secretion from the cell would have large numbers of
rough ER and Golgi.
lysosomes and Golgi.
Golgi and microvilli.
ribosomes and centrioles.
mitochondria and cilia.
Slide 9 : Epithelial tissue is characterized by
tightly packed cells.
absence of any basement membrane.
extensive extracellular matrix.
a rich blood supply.
A & D are correct
Slide 10 : Experimental manipulation to increase the energy output of the cell might include
rupturing the lysosomes in the cell.
increasing the number of mitochondria.
decreasing nuclear size.
removing some of the ribosomes.
increasing protein synthesis
Slide 11 : Which of the following types of connective tissue is mismatched with its matrix?
areolar - loosely packed matrix of protein fibres
bone - mineralized matrix
cartilage - highly vascular matrix
blood - fluid matrix
bone – highly vascular
Slide 12 : Which of the following cell types is responsible for building up bone matrix?
chondroblast
osteoblast
osteoclast
osteocyte
Slide 13 : Put the following parts of a reflex arc in the correct order beginning with the sensory receptor.
motor neuron
interneuron
effector
sensory neuron
sensory receptor
5, 1, 2, 3, 4
5, 3, 2, 4, 1
5, 4, 3, 2, 1
5, 2, 3, 4, 1
5, 4, 2, 1, 3
Slide 14 : Dendrites of motor neurons
are the input part of the neuron.
conduct action potentials away from the cell body.
are generally long and unbranched.
form synapses with the microglia.
contain the trigger zone.
Slide 15 : Arrange the events of synaptic transmission in correct sequence.
sodium ions diffuse into the cell and cause a local potential
neurotransmitter binds with receptor on postsynaptic cell
neurotransmitter diffuses across the synaptic cleft
membrane permeability to sodium ions on postsynaptic cell increases
action potential causes release of neurotransmitter
5, 2, 3, 4, 1
5, 2, 3, 1, 4
5, 3, 4, 1, 2
5, 4, 3, 2, 1
5, 3, 2, 4, 1
Slide 16 : The gray matter on the outer surface of the cerebrum is called the
cortex.
pia mater.
reticular formation.
arbor vitae.
cerebral medulla
Slide 17 : If the resting membrane potential becomes more negative, which of the following has occurred?
hyperpolarization
repolarization
depolarization
isopolarization
Slide 18 : Which of the following is true?
In saltatory conduction, electrical charges flow from node to node.
Myelination will not influence the speed of conduction of action potentials.
The myelin sheath inhibits the flow of electrical charges at nodes.