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Anatomy and Physiology
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Anatomy and Physiology
- Page 92
Organisation of the Body
41
Cells and Tissues
129
Measurement, Errors, Data and Unit Conversion
45
Integument
65
Homeostasis
0
Skeleton and Joints
100
Muscles
98
Gastrointestinal System
140
Endocrine System
102
Renal System
117
Cardiovascular System
365
Respiratory System
130
Nervous System
292
Reproductive System
72
The Physics of Waves: Light Waves, Sound Waves and Ultrasound
62
Ionising Radiation
92
Electricity
35
Biomechanics
58
Body Temperature, Energy and Heat Loss
70
Chemistry for Physiology
279
Show/Hide Answers
Chemistry for Physiology
A solution of 5% glucose is used for an infusion. Over a 2 h period, 300 ml of the solution were used. How much glucose in grams was infused?
5 g
12.5 g
15.0 g
50 g
5% means 5 g per 100 ml. So in 300 ml there would be 3 × 5 g = 15 g infused.
Author:
rikazzz
Comment
Chemistry for Physiology
Which of the following statements concerning isotopes is FALSE?
They contain the same number of protons in their atoms.
They contain the same number of electrons in their atoms.
They contain the same number of neutrons in their atoms.
They have very similar chemical properties.
Having a different number of neutrons (while having the same number of protons) is what defines them to be isotopes
Author:
rikazzz
Comment
Cardiovascular System
A man who is standing has a resting systolic blood pressure of 120 mmHg at the start of his aorta. What will be the pressure in the arteries of his feet?
About 40 mmHg, as arterial blood pressure decreases with distance from the heart
About 120 mmHg as arterial blood pressure does not fall appreciably until just before blood enters the capillaries
About 200 mmHg as the “head” of liquid increases the blood pressure in the feet
About 80 mmHg as blood pressure will drop in the absence of venous return when the “skeletal muscle pump” is not operating
When standing, the BP in the feet results from the pumping of the heart (120 mmHg) as well as the hydrostatic effect of the head of liquid – another 80 mmHg or more.
Author:
rikazzz
Comment
Endocrine System
The hormones known as “catecholamines” (adrenaline, noradrenaline and dopamine) are not lipid soluble. Therefore their receptor sites are:
On the inside of the plasma membrane
On the outside of the plasma membrane
In the cell cytoplasm
In the cell nucleus
With the receptors on the outside of the membrane, catecholamines do not need to be able to penetrate the membrane.
Author:
rikazzz
Comment
Body Temperature, Energy and Heat Loss
The thermodynamic temperature scale has an “absolute zero” at −273 °C. In what sense is the zero absolute?
It is 0 Kelvin.
It is exactly 0.00000000….
Particle motion has ceased at this temperature.
It is impossible to reach this temperature.
As temperature is a measure of the kinetic energy of particles, when all particle motion has stopped, temperature is at its lowest point and cannot decrease further.
Author:
rikazzz
Comment
Cardiovascular System
What is the name of the valve between the left atrium and the left ventricle?
Mitral valve
Tricuspid valve
Semilunar valve
Aortic valve
Also known as the bicuspid valve, the aortic valve is also a semilunar valve.
Author:
rikazzz
Comment
Endocrine System
What hormones are produced by the adrenal medulla?
Epinephrine and norepinephrine
Insulin and glucagon
Aldosterone and erythropoietin
Testosterone and estrogen
The medulla is the deeper part of the adrenal gland.
Author:
rikazzz
Comment
Cardiovascular System
Which of the following processes is NOT part of the vascular phase of haemostasis?
The formation of prothrombinase.
The vessel walls contract in a spasm.
Endothelial cells release chemicals.
Endothelial cells become sticky allowing platelets to adhere.
Prothrombinase formation is part of the coagulation phase.
Author:
rikazzz
Comment
Electricity
What is meant when a medical procedure room is electrically wired as a “cardiac- protected area”? Patients that are connected to an electrical device are:
Protected from macro-electrocution
Protected from micro-electrocution
Only permitted to be connected via electrodes that are placed on their skin
Unlikely to experience ventricular fibrillation
Procedures conducted in cardiac-protected areas may involve a direct electrical connection to the heart from a device that is connected to the electrical mains. Such a connection bypasses the relatively high insulation provided by the dry skin. Hence electrical devices must be prevented from allowing even very small faulty electrical currents to flow into the patient (micro-electrocution).
Author:
rikazzz
Comment
Chemistry for Physiology
The solution concentration 0.9% means that there are:
0.9 g of solute in 100 ml of solution
9.0 g of solute in 100 ml of solution
0.9 g of solute in 1 L of solution
0.9 mol of solute in 100 ml of solution
0.9% = 0.9% = 0.9 per hundred = 0.9 g per 100 ml of solution.
Author:
rikazzz
Comment
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