282 Answered Questions for the topic physiology
Is there any use of CO₂ in human body?
We all know CO₂ as a waste product of metabolism . Does CO₂ have any helpful role , apart from having a role in pH of blood ?
Why do mints make your mouth feel cold?
Why do mints make your mouth feel cold? And specifically, why does your mouth feel so cold if you eat a few mints and then drink a glass of cold water afterwards?
What are the three forms of passive transport?
Why do capillaries have thin walls?
Why is the brain dependent on glucose?
The strict dependence of the (human) brain on glucose has always been puzzling to me. While ketones can substitute for a portion of the brain's energy needs, it cannot substitute completely: blood... more
How many muscles are in the human body?
Is blood a mixture or a compound?
Cardiovascular Physiology: Cardiac Cycle Question
1) Which of the following does NOT occur shortly following the P wave? A. Atrial systoleB. The AV valves remain opened until isovolumetric contractionC. Heart sound 1 occursD. None of the above
Blood Fluids and Renal Physiology
The following set of questions pertains to the following case:A 25 year old male has just run 2 miles. Unfortunately, he left his water bottle on the toilet paper dispenser in one of the stalls of... more
Respiratory Physiology: Hemoglobin
A woman dumped a bucket of ice water over her head to raise global awareness about a neurological disease called amyotrophic lateral sclerosis, ALS. Which of the following correctly describes what... more
What is the optimal time to implant embryo in uterus for in vitro fertilization?
What is the best time to implant an embryo in the uterus. I was under the impression that the earlier the better and more natural, but also if you wait until the blastocyst age, it may be better to... more
During respiration, gas exchange with the bloodstream takes place in the small sacs called _________________.
The ________ circulation picks up oxygen for cellular use and drops off carbon dioxide for removal from the body.
Which of the following components of a "typical" spinal nerve contains ONLY sensory (afferent) nerve fibers?
What occurs at the alveoli and pulmonary capillaries?
What are the effects of caffeine on the mammalian circulatory system?
A friend of mine told me an anecdote about his mother, who drank too much caffeine, to the point she became hypotensive and would pass out. Because caffeine acts as a stimulant, I'm assuming the... more
Which function of the skeletal system would be especially important if you were in a car accident?
What is a surgical incision into a nerve called?
When oxygen is used to break down glucose, it is called _________________ metabolism.
Can humans live without their right atrium?
The right atrium is one of four chambers (two atria and two ventricles) in the hearts of mammals (including humans) and archosaurs (which include birds and crocodilians). It receives deoxygenated... more
The kidneys filter out a waste product called _________________.
How fast can a human run?
I'm a runner (cross country) and I'm always amazed at how fast Olympic sprinters are. There's a lot of hype about those in the 100-meter dash being the fastest in the world, and we're constantly... more