MID SEM MOCK TEST

Question 1

What results from a lesion of the corticospinal tract on the right side of the brainstem?

Answer 1

A spastic paralysis on the left side of the body

Question 2

What symptom results from a lesion of the primary motor cortex on the left side of the brain?

Answer 2

A spastic paralysis on the right side of the body

Question 3

A lesion encompassing the supramarignal and angular gyral region on the left side of the brain results in a

Answer 3

Deficit in reading and writing

Question 4

The medial lemniscus conveys sensory information from where to where?

Answer 4

The gracile and cuneate nuclei to the thalamus

Question 5

A lesion of the lateral spinothalamic tract on the left side of the cervical spinal cord results in

Answer 5

A loss of pain and temperature on the right side of the body

Question 6

Which lesion results in a dissociated sensory loss?

Answer 6

A lesion on the right side of the spinal cord

Question 7

Which of the following is characteristic of a ventral root of the spinal cord?

Answer 7

Contains myelinated axons from the lower motor neurons

Question 8

Which happens most rapidly in our bodies when we are in a situation of immediate danger or alarm?

Answer 8

Sympathetic nerve signals affect various body functions

Question 9

A person who suffers from excessive stimulation of the sympathetic nervous system following emotional stress or exposure to cold (Raynaud disease) is likely to experience

Answer 9

Chronic vasoconstriction leading to white appearance in fingers and toes

Question 10

If cells in a particular organ do not respond to water-soluble hormone prolactin, what is the most likely reason?

Answer 10

The cells lack the prolactin surface receptor

Question 11

Which neurotransmitter is used at synapese by both motor neurons and pre-ganglionic autonomic neurons?

Answer 11

Acetylcholine

Question 12

In deep vein thrombosis, a large cylindribal blood clot forms in a vein of the leg. If the clot breaks free and begins to move with the blood flow, it is likely to lodge in the

Answer 12

pulmonary artery

Question 13

A surgeon exposes a human patient’s heart by making a midline incision through the skin of the chest, then cutting lengthwise through the sternum and opening the pericardium. In this view, the chamber of the heart which she would be LEAST likely to see is the?

Answer 13

left atrium

Question 14

A construction worker trips and falls onto a thin steel rod which pierces his left side. The tip of the rod stops in the middle of the worker’s right ventricle. Which structure was most likely to have been damaged last by the rod tip, as it entered the worker’s thorax?

Answer 14

Chordae tendineae

Question 15

What phase is this? The mitral valve is closed, aortic pressure can decrease, atrial pressure increases and the ventricular volume changes?

Answer 15

Ventricular ejection

Question 16

What is incorrect in respect to coronary arteries?

Answer 16

That they are elastic arteries - as they are muscular arteries!

Question 17

Spinal cord transection at the level of the neck would result in

Answer 17

loss of sympathetic control over stroke volume

Question 18

An increase in afterload on the heart is most likely to be associated with

Answer 18

hypertension

Question 19

A fall in blood pressure results in

Answer 19

A decrease in afferent baroreceptor nerve firing

Question 20

Which type of blood vessel exerts the major control of systemic vascular resistance?

Answer 20

Arterioles

Question 21

An increase in the preload on the heart is most likely a result of

Answer 21

An increase in blood volume

Question 22

The sympathetic nervous system is

Answer 22

involved in the moment to moment regulation of blood pressure

Question 23

In healthy individuals, the resting heart rate is slower than the intrinsic rate of the pacemaker cells of the sino-atrial node. This is predominantly due to

Answer 23

the activity of the parasympathetic nervous system

Question 24

Blood flows mostly slowly through

Answer 24

Capillaries, because their total cross-sectional area is the biggest

Question 25

Mullerian duct regression is under the control of which hormone?

Answer 25

AMH

Question 26

The typical first visible sign of male puberty is the

Answer 26

enlargement of the testes

Question 27

When do the ovaries of females contain the greatest number of oocytes?

Answer 27

at birth

Question 28

The LH surge is primarily responsible for which event during the menstrual cycle?

Answer 28

Ovulation

Question 29

Which Sertoli cell-derived hormone acts via negative feedback to turn off FSH production?

Answer 29

Inhibin

Question 30

Where are spermatogonia located?

Answer 30

in the adluminal compartment of the seminiferous tubules

Question 31

The seminal vesicles

Answer 31

secrete an alkaline fluid

Question 32

Oligospermia is

Answer 32

decreased sperm count

Question 33

In a rat, during swallowing food…

Answer 33

passes dorsal to the trachea and into the oesophagus

Question 34

During your rat dissection lab, which structure had the least vascular appearance

Answer 34

STOMACH

Question 35

The occurrence of unusually high amounts of fats and lipids in the faeces of a rat is most likely due to a problem with?

Answer 35

Liver

Question 36

An organ in the rat which manufactures proteins and then releases them both into the gut and into the blood stream is the

Answer 36

pancreas

Question 37

Identify the triplet which contains structures likely to be seen in the same transverse slice that has been cut horizontally through the human brain

Answer 37

Hypothalamus, temporal lobe, cerebellum

Question 38

Katniss shot a person with an arrow to the head and neck region, which caused total respiratory and cardiovascular failure. Which of the following structures did the arrow most likely damage?

Answer 38

Brainstem

Question 39

During brain surgery, the surgeon accidentally damaged a region of the cortex located slightly anterior to the posterior border of the parietal lobe in the left hemisphere. What symptom is this accident likely to cause the patient?

Answer 39

The patient cannot read and understand the breakfast menu

Question 40

During a test, a student lost coordination of their right hand and started scribbling with their pencil all over their sheet without any control. Disease to which area is most likely to cause this symptom?

Answer 40

Exner’s area - hand and motor control

Question 41

The queen opened the jewelled box and could immediately tell she was looking at the heart in the dorsal view, because she could clearly see…

Answer 41

a small, thin-walled blood vessel veering anteriorly and to the left of the heart

Question 42

In the sheep heart, what is associated with the pulmonary valve?

Answer 42

It’s ventral to the aortic valve

Question 43

Harry inserts one blade of his scissors into the lumen of the right ventricle and cuts along the ventricular wall in an anterior direction until he enters the right atrium and partly opens the wall. While making this incision, he is likely to have cut through?

Answer 43

A coronary artery

Question 44

A left atrio-ventricular valve leaflet has a greater surface area than that of the right

Answer 44

True

Question 45

With the heart vales and their action during a normal cardiac cycle

Answer 45

The first heart sound is best heard near the apex of the heart, while the second heart sound is best heard near the base of the heart