65 Answered Questions for the topic human physiology

04/19/19

How does aspirin "thin" blood?
As we all know, aspirin doesn't actually "thin" the blood, as it has been explained to me, it makes it "slippery". Slippery blood doesn't stick to itself hence this helps prevent internal blood... more
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Human Physiology Anatomy Physiology Cardiology

04/12/19

Why do our bodies maintain blood pressure but not the flow rate?
This might be a silly question but i'm not not clear I'm always told that blood pressure is homeostatic parameter and can't not be changed but isn't what important is the flow rate to the organs?... more
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Human Physiology Anatomy Physiology Sensation

03/19/19

How do our sensory organs work automatically without our conscious effort?
I wonder how our different sensory organs (e.g., eyes, nose, ears, etc.) work automatically without our conscious efforts or without our command. We don't have to tell our eyes how to see, our ears... more
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03/19/19

Why antipyretics do not bring the body-temperature below normal?
Antipyretics like paracetamol are used to decrease the body-temperature in fever patients. But some of them are also used as pain-killers in sprain or other injuries (where there's no fever). In... more
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03/18/19

Why can hair grow without limit while eyebrow cannot?
I cut my eyebrow and it grows until reach a certain length. Hair can grow without limit.Why can hair grow without limit while eyebrow cannot?
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Human Physiology

08/11/18

pleasei need help with a homeostasis mechanism [
When a vessel is damaged, chemicals are released from the vessel walls that attract platelets to the site of the damage. As they accumulate, more chemicals that attract more platelets to the area... more
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Human Physiology Biology Biochemistry Physiology

03/24/18

What clinical problems would be expected to arise if fetal hemoglobin persisted into adulthood?
 Fetal hemoglobin has higher oxygen affinity so my only thought might be that it would not release oxygen as easily in the tissues.
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Human Physiology

11/02/17

If the renal afferent arterioles constrict while the efferent arterioles remain unchanged, the glomerular filtration rate (GFR):
1) decreases due to a decrease in glomerular capillary blood pressure. 2) decreases due to an increase in glomerular capillary blood pressure. 3) increases due to a decrease in osmotic pressure... more
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Human Physiology Biology Physiology Medicine

09/16/17

Blood and Plasma Protein Question
Enumerate the plasma proteins along with their site of synthesis. List the important functions of plasma proteins and their normal serum levels. Define hypoproteinemia and discuss its clinical... more
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Human Physiology Biology

04/05/17

Cardiovascular Effects of Exercise
Describe and explain trends in your data obtained in Exercise 3 (forearm exercise). How might this data differ if you were to have done the same experiment with a much larger muscle / set of... more
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Human Physiology Biology

04/05/17

Cardiovascular Question
The heart has its own electrical impulses that self-originate so that the heart can beat despite an absence of other input (heart tissue grown in a dish will spontaneously beat on its own!).... more
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Human Physiology Science Biology Anatomy

04/03/17

Tracing blood flow from heart to regions of the shoulder and brachium
Trace blood from the heart to the muscle indicated and back to the heart in each of the columns below. Your trace should be a columnar list of all vessels through which the blood passes on its... more
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Human Physiology

06/10/16

Hematocrit levels after blood donation
After blood donation, plasma levels return within normal levels within a couple of days. Red blood cells take approximately ~2 weeks to return to their normal levels. If an XY subject donates... more
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Human Physiology

04/18/16

satisfy his oxygen demand while submerge? Justify your answer numerically (fresh air contains 20.94% O2
Indiana Jones is being chase by villains to escape he grabs a straight bamboo shoot with a base that is 5 cm2 and 1.2 meter long and jumps into a stream. Luckily the stream is just deep enough that... more
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Human Physiology Human Biology

10/17/13

Why are yawns contagious?
Does anyone actually know the answer to this? 
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