questions

[ramalkin]

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which has highest viscosity blood in body?
a. aorta
b. vana cava
c. vasa recta
d. pulmonary vein
e. pul artery


which of the foll can increase the rrate of net flux or diffusion of Oxygen through the alveolar membrane?
-increasing the cross sectional area
-decreasing the conc gradient


which of the foll amino acids has a OH group that sometimes participated in enz rxns?
-serine
-alanine
-glycine
-proline
-arginine



enterogastric reflex produces..
-increase in gastric motility
-decrease in " "
_decrease in intestinal motility
- increase in " "



transmission of impulse 4m the motor nerve 2 the mucscle cell regularly produces..
- an axn potential in the muscle cell
- a graded potential in the " "
- hyperpolarization of the " "
- hypopolarization of the " "
- alteration in the threshold potential of muscle cell.


which is NOT a charactristic of creatinine?
- freely filtered
- slightly secreted
- " reabsorbed
- produced enodgenously at a constant rate



HYPOKALEMIA reslts in?
reduced membrane threshold potential
elevatred membrane threshold pot.
hyperpolarized cell memb pot
hypopolarized " " "
hyperactive neuromuscular reflexes


which of the foll represents the sensory organs concerned with maintanence of skeletal muscle tonus?
sarcomeres
muscle spindles
gamma efferents
pacinian corpuscles
golgi tendon organs

 

[morphology]

which has highest viscosity blood in body?
a. aorta
b. vana cava
c. vasa recta---answer
d. pulmonary vein
e. pul artery


which of the foll can increase the rrate of net flux or diffusion of Oxygen through the alveolar membrane?
-increasing the cross sectional area
-decreasing the conc gradient


which of the foll amino acids has a OH group that sometimes participated in enz rxns?
-serine-----answer
-alanine
-glycine
-proline
-arginine



enterogastric reflex produces..
-increase in gastric motility
-decrease in " " ---------answer
_decrease in intestinal motility
- increase in " "



transmission of impulse 4m the motor nerve 2 the mucscle cell regularly produces..
- an axn potential in the muscle cell
- a graded potential in the " "
- hyperpolarization of the " "
- hypopolarization of the " "
- alteration in the threshold potential of muscle cell.


which is NOT a charactristic of creatinine?
- freely filtered
- slightly secreted
- " reabsorbed---------answ
- produced enodgenously at a constant rate



HYPOKALEMIA reslts in?
reduced membrane threshold potential
elevatred membrane threshold pot.
hyperpolarized cell memb pot
hypopolarized " " "
hyperactive neuromuscular reflexes


which of the foll represents the sensory organs concerned with maintanence of skeletal muscle tonus?
sarcomeres
muscle spindles-----ans
gamma efferents
pacinian corpuscles
golgi tendon organs

i am not sure about these answers.
can you post the answers?
from where did u get these questions?

 

[ramalkin]

Dehydration, severe vomitting , overuse of a narcotic analgesic, might present with which of the foll symptoms?
-increased pulse rate
-increased BP
-facial edema
-distended neck veins
-desire to urinate constantly

Kindly provide with the explanations...

 

[missiondds]

which has highest viscosity blood in body?
a. aorta
b. vana cava
c. vasa recta(answer)
d. pulmonary vein
e. pul artery


which of the foll can increase the rrate of net flux or diffusion of Oxygen through the alveolar membrane?
-increasing the cross sectional (ANSWER)
-decreasing the conc gradient


which of the foll amino acids has a OH group that sometimes participated in enz rxns?
-serine(ANSWER)
-alanine
-glycine
-proline
-arginine



enterogastric reflex produces..
-increase in gastric motility
-decrease in " "(ANSWER)
_decrease in intestinal motility
- increase in " "



transmission of impulse 4m the motor nerve 2 the mucscle cell regularly produces..
- an axn potential in the muscle cell(ANSWER)
- a graded potential in the " "
- hyperpolarization of the " "
- hypopolarization of the " "
- alteration in the threshold potential of muscle cell.


which is NOT a charactristic of creatinine?
- freely filtered
- slightly secreted
- " reabsorbed(ANSWER)
- produced enodgenously at a constant rate



HYPOKALEMIA reslts in?
reduced membrane threshold potential
elevatred membrane threshold pot.
hyperpolarized cell memb pot(ANSWER)
hypopolarized " " "
hyperactive neuromuscular reflexes


which of the foll represents the sensory organs concerned with maintanence of skeletal muscle tonus?
sarcomeres
muscle spindles
gamma efferents
pacinian corpuscles
golgi tendon organs

(ANSWER)

pls post the answer.

i guess most r preety correct.

 

[ramalkin]

sorry guys even i dont not have the answers 2 d questions..

can any1 provide with the explanations ..

 

[aim high]

which of the foll represents the sensory organs concerned with maintanence of skeletal muscle tonus?
sarcomeres
muscle spindles---answer
gamma efferents
pacinian corpuscles
golgi tendon organs

rest i agree totally with missiondds

 

[ramalkin]

why vasa recta has the highest viscosity of blood?

 

[missiondds]

Dehydration, severe vomitting , overuse of a narcotic analgesic, might present with which of the foll symptoms?
-increased pulse rate(answer)
-increased BP
-facial edema
-distended neck veins
-desire to urinate constantly

Kindly provide with the explanations...

dehydration---> adh is high so desire to urinate is false

severe vommiting ---> loss of h from body---->metabolic alkalosis,


fluid loss due to vomitting will cause --->ecf volume contraction----> renin angiotensin system activation----> increase in aldosterone/increase in angiotensin2

aldosteron___> salt n water retention

aldosterone---> hco3 resorption via na /h echange---> aggrevation of alkalosis

opiates---> respiratory acidosis--->aggrevation of alkalosis

so i guess the net effect could becontraction alkalosis which will cause increase in pulse pressure.

where did u find this amazing question!!!!

 

[aim high]

Dehydration, severe vomitting , overuse of a narcotic analgesic, might present with which of the foll symptoms?
-increased pulse rate
-increased BP
-facial edema
-distended neck veins
-desire to urinate constantly

Kindly provide with the explanations...

answer)facial edema
explanation--the conditions in the question ll lead to metabolic alkalosis in which potassium ions are lost due to heavy loss of fluids.. to compensate this there is extracellular diffusion of potassium ions out of the cell...increase in serum potassium ll cause release of aldosteron...aldosterone helps excrete potassium ions again n retain sodium n water..this ll lead to facial edema.

any more explanations?

 

[aim high]

why vasa recta has the highest viscosity of blood?

ans)vasa recta are capillaries from efferent arteriol ,hairpin shaped deep into medulla.this arrangement helps them to act as counter current exchangers and maintain hypertonicity of medulla by not allowing the interstitial fluid into it and maintaining high osmotic gradiant.
func of vasa recta is to provide nutrients,remove waste without washing away the solutes.

hope it helps

 

[missiondds]

which of the foll represents the sensory organs concerned with maintanence of skeletal muscle tonus?
sarcomeres
muscle spindles---answer
gamma efferents
pacinian corpuscles
golgi tendon organs

rest i agree totally with missiondds

i agree its muscle spindle... just that tiny whiny doubt... rthnks

 

[missiondds]

why vasa recta has the highest viscosity of blood?

ans)vasa recta are capillaries from efferent arteriol ,hairpin shaped deep into medulla.this arrangement helps them to act as counter current exchangers and maintain hypertonicity of medulla by not allowing the interstitial fluid into it and maintaining high osmotic gradiant.
func of vasa recta is to provide nutrients,remove waste without washing away the solutes.

hope it helps

according to u r expalination.. whn aldosterone effect is high thn na n water shud have been resorbed... so thn it couls also lead to elevation of bp .. not facial edema..coz facial edema is LOCALIZED. WHILE EFFECTS DUE TO SYMPATHETIC STIMULATIONS SUCH AS HIGH ALDOSTERONE ARE GENERALIZED. REMEMBER ANASARCA !!!... SO CERATINLY LOCALIZED EDEMA ISNT THE ANSWER...

WHT I AM STUCK IS BETWEEN INCREAD BP/ PULSE PRESSURE..

 

[aim high]

according to u r expalination.. whn aldosterone effect is high thn na n water shud have been resorbed... so thn it couls also lead to elevation of bp .. not facial edema..coz facial edema is LOCALIZED. WHILE EFFECTS DUE TO SYMPATHETIC STIMULATIONS SUCH AS HIGH ALDOSTERONE ARE GENERALIZED. REMEMBER ANASARCA !!!... SO CERATINLY LOCALIZED EDEMA ISNT THE ANSWER...

WHT I AM STUCK IS BETWEEN INCREAD BP/ PULSE PRESSURE..

what i know is retention of na and water causes edema..so thought facial edema....was not sure though

so anyways if there is retension of water then certainly there shud be increased BP...so that might be the answer.

 

[UDUSA]

HYPOKALEMIA reslts in?
reduced membrane threshold potential
elevatred membrane threshold pot.
hyperpolarized cell memb pot(ANSWER)
hypopolarized " " "
hyperactive neuromuscular reflexes

Since intercellular con of potassium is high when cell is hyperpolarized,How does HYPOKALEMIA cause hyperpolarization?😕

 

[dental material]

answer)facial edema
explanation--the conditions in the question ll lead to metabolic alkalosis in which potassium ions are lost due to heavy loss of fluids.. to compensate this there is extracellular diffusion of potassium ions out of the cell...increase in serum potassium ll cause release of aldosteron...aldosterone helps excrete potassium ions again n retain sodium n water..this ll lead to facial edema.

any more explanations?

Vomiting and loss of fluid cause ECF volume conntraction , so no chance of distended veins o, facial edema or increase in BP. Body try to compensate this by increase in heart rate so increase in pulse rate should be the answer

 

[ramalkin]

thank u guys 4 d response. ur effort is highly appreciated. n it did solve my doubts.