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183 Answered Questions for the topic human biology

Human Biology Cello

06/14/20

Why vitamin deficiency causes health problems in us?

Why vitamin deficiency causes health problems in us?
Human Biology Human Anatomy Cello

06/14/20

How Down Syndrome can be detected?

How Down Syndrome can be detected?
Human Biology Science Biology

03/28/20

The bonding of Acetylcholine to its muscarinic receptors on smooth muscle causes gated K+ channels to close. This action is described as what?

Would it be inhibitory or excitatory and would the cell depolarize or hyper-polarize?
Human Biology Biology Physiology

03/28/20

During the fight and flight response, elevated levels of epinephrine and norepinephrine stimulate less sensitve alpha receptors as well as beta receptors on smooth muscle of blood vessels.

How does this impact blood flow?I believe it impacts blood flow by redirecting from the GI tract and kidneys to skeletal muscle. Can someone confirm?

10/04/19

In what ways has the internet affected how you view reality? Explain using a symbolic interactionist perspective

in what ways has the internet affected how you view reality? Explain using a symbolic interactionist perspective
Human Biology Anatomy Physiology

09/10/19

health issue in pakistan

a lot of health issue in Pakistan silent killer called hypertension, rate of hypertension increase day by day which are the root of cardiovascular disease how we control hypertension?
Human Biology Biology

08/02/19

Why isn't vomit corrosive?

Vomit comes from gastric acid, right? And in gastric acid there is HCl and HCl is corrosive (strong), how come when I vomit, it doesn't destroy things that it (as the vomit) hits (such as floor,... more
Human Biology Biology Neuroscience

07/31/19

Why have humans evolved much more quickly than other animals?

Humans have, in a relatively short amount of time, evolved from apes on the African plains to upright brainiacs with nukes, computers, and space travel. Meanwhile, a lion is still a lion and a... more

07/30/19

Besides hemoglobin, what proteins are present in red blood cells?

I knew that mature red blood cells (RBCs) lacked nuclei, but I wasn't aware until just now that they also lacked ribosomes and mitochondria. Most cells in the human body all contain a common... more
Human Biology Biology Death

07/24/19

Will neurons die if they are inactive for a long time?

We know that when muscles are not used they atrophy. Does something similar also happen in neurons if they do not receive any stimulus?
Human Biology Biology Stem Cells

07/24/19

Possible? When a pregnant woman suffers an organ damage, fetus would send stem cells to the damage organ to help repair it?

I am quite sure that there is this blood-placental barrier between the mother and the baby so that nothing (except a type of antibody) can pass through it.But I remember reading somewhere that when... more
Human Biology Biology Evolution

07/24/19

Are humans the only species who drink milk as adults?

I was drinking a glass of milk the other day and that got me thinking that no other animal to my knowledge drinks milk past their infant stages. One could argue that cats might but it isn't good... more
Human Biology Microbiology Cell Biology

07/23/19

Can someone explain the color-changing unit (CCU) to me?

I've been physically carrying out serial tenfold dilutions on samples of Ureaplasma to work out the color-changing units (CCU). As a definition, the CCU is the highest dilution at which there is... more
Human Biology Biology Cell Biology

07/19/19

Does an allergic reaction kill body cells?

I have wondered what actually happens in an allergic reaction that causes the symptoms such as pain, rash etc.Is it possible that the human body actually kills its own cells in the process?
Human Biology Biology Virology

07/19/19

Why is rabies incurable?

I'm still not sure about the mechanics that lead to rabies being incurable. I know that it can be treated before any symptoms show up, but why is it that once symptoms show the person is a dead man... more
Human Biology Microbiology Teeth

07/19/19

How can fresh cavities form at the margins of sliver amalgam fillings on teeth?

Silver amalgam fillings predominantly contain silver a known bactericidal agent and mercury which a known toxin and has bactericidal property. So how is it that the plaque bacteria survive near the... more
Human Biology Biology Lifespan

07/18/19

Are there biological reasons why life expectancy is lower for men in most countries of the world?

I've been checking life expectancy figures for men versus women in many countries of the world and the figures for men sometimes are terrifying. Countries like Russia have a 12 years gap in... more
Human Biology Biology Exercise

07/14/19

Why does it hurt the next day after doing significant exercise?

I think this is a fairly common observation that if one does some significant amount of exercise, he/she may feel alright for the rest of the day, but it generally hurts bad *the next day*. Why is... more
Human Biology Microbiology Bacteriology

07/11/19

Does making yogurt from non-pasteurized milk work against possible disease bacteria?

In the past, when there was no pasteurization, could making yogurt from milk lower the chance of getting infected by bovine tuberculosis (or other diseases from infected milk)? For example, would... more
Human Biology Biology Neuroscience

07/11/19

How is temperature sensed?

Can anyone summarize the mechanism by which when an object of a given temperature is placed in contact with, say, the skin on a human fingertip, the average speed of the particles of the object is... more
Human Biology Biology Eyes

07/09/19

How long do your eyes need to adapt to darkness and reach full contrast?

I heard you should wait some time until your eyes adapt to darkness and are able to see smallest luminosity differences, otherwise you might overlook faint objects in the ocular. Are there any... more
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