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Re: Anatomy and Physiology B/C

Posted: March 31st, 2019, 8:04 pm
by WangwithaTang
Ok, last one (for now :P )

27. Which of the following INCREASES hemoglobin binding affinity for oxygen?
I. 2, 3-diphosphoglycerate
II. increase in blood pH
III. increase in temperature
a. I only
b. II only
c. I, II
d. II, III
e. None of the above

The answer was b, but doesn't increased blood pH actually cause oxygen detachment.

Re: Anatomy and Physiology B/C

Posted: March 31st, 2019, 8:20 pm
by bp31000
WangwithaTang wrote:Ok, last one (for now :P )

27. Which of the following INCREASES hemoglobin binding affinity for oxygen?
I. 2, 3-diphosphoglycerate
II. increase in blood pH
III. increase in temperature
a. I only
b. II only
c. I, II
d. II, III
e. None of the above

The answer was b, but doesn't increased blood pH actually cause oxygen detachment.

factors causing increased Hb affinity for O2: decreased PCO2, Decreased H+ (not decreased pH), decreased 2,3 DPG, Decreased temp

Re: Anatomy and Physiology B/C

Posted: March 31st, 2019, 9:58 pm
by WangwithaTang
bp31000 wrote:
WangwithaTang wrote:Ok, last one (for now :P )

27. Which of the following INCREASES hemoglobin binding affinity for oxygen?
I. 2, 3-diphosphoglycerate
II. increase in blood pH
III. increase in temperature
a. I only
b. II only
c. I, II
d. II, III
e. None of the above

The answer was b, but doesn't increased blood pH actually cause oxygen detachment.

factors causing increased Hb affinity for O2: decreased PCO2, Decreased H+ (not decreased pH), decreased 2,3 DPG, Decreased temp

oh, looks like I confused myself

Re: Anatomy and Physiology B/C

Posted: April 2nd, 2019, 4:43 pm
by nshezad123
jlordhe wrote:Is Anatomy a permanent event(one that does not rotate)?

No, the systems change every year. :)

Re: Anatomy and Physiology B/C

Posted: April 2nd, 2019, 4:50 pm
by WangwithaTang
nshezad123 wrote:
jlordhe wrote:Is Anatomy a permanent event(one that does not rotate)?

No, the systems change every year. :)


However, the event anatomy itself is never swapped out for another one.

Re: Anatomy and Physiology B/C

Posted: April 3rd, 2019, 8:00 pm
by WangwithaTang
Just a quick question, are the three walls of the heart the epicardium, endocardium, and myocardium or pericardium, endocardium, and myocardium? Because I thought the pericardium was the outermost layer of the heart, but the University of Florida invitational (C) said it was epicardium.

Re: Anatomy and Physiology B/C

Posted: April 3rd, 2019, 8:06 pm
by Paypog
WangwithaTang wrote:Just a quick question, are the three walls of the heart the epicardium, endocardium, and myocardium or pericardium, endocardium, and myocardium? Because I thought the pericardium was the outermost layer of the heart, but the University of Florida invitational (C) said it was epicardium.

I think this may be because the pericardium is the sac that surrounds the heart and isn't officially a layer of the heart. Therefore, the epicardium is the outermost layer of the heart, making the three walls the endocardium, myocardium, and epicardium.

Re: Anatomy and Physiology B/C

Posted: April 4th, 2019, 3:26 am
by Here
WangwithaTang wrote:Just a quick question, are the three walls of the heart the epicardium, endocardium, and myocardium or pericardium, endocardium, and myocardium? Because I thought the pericardium was the outermost layer of the heart, but the University of Florida invitational (C) said it was epicardium.

The pericardium is a sac enclosing the heart or surrounding the heart wall, rather than being an actual layer of the heart wall.

Re: Anatomy and Physiology B/C

Posted: April 4th, 2019, 9:43 am
by WangwithaTang
Here wrote:
WangwithaTang wrote:Just a quick question, are the three walls of the heart the epicardium, endocardium, and myocardium or pericardium, endocardium, and myocardium? Because I thought the pericardium was the outermost layer of the heart, but the University of Florida invitational (C) said it was epicardium.

The pericardium is a sac enclosing the heart or surrounding the heart wall, rather than being an actual layer of the heart wall.


oh, okay. But isn't the epicardium part of the pericardium?

Re: Anatomy and Physiology B/C

Posted: April 4th, 2019, 10:09 am
by Here
WangwithaTang wrote:
Here wrote:
WangwithaTang wrote:Just a quick question, are the three walls of the heart the epicardium, endocardium, and myocardium or pericardium, endocardium, and myocardium? Because I thought the pericardium was the outermost layer of the heart, but the University of Florida invitational (C) said it was epicardium.

The pericardium is a sac enclosing the heart or surrounding the heart wall, rather than being an actual layer of the heart wall.


oh, okay. But isn't the epicardium part of the pericardium?

The epicardium is the innermost layer of the pericardium
The layers of the pericardium not including the epicardium include great vessels, while the epicardium layer just encloses the heart, making it considered one of the walls of the heart.

Re: Anatomy and Physiology B/C

Posted: April 4th, 2019, 4:24 pm
by WangwithaTang
Here wrote:
WangwithaTang wrote:
Here wrote: The pericardium is a sac enclosing the heart or surrounding the heart wall, rather than being an actual layer of the heart wall.


oh, okay. But isn't the epicardium part of the pericardium?

The epicardium is the innermost layer of the pericardium
The layers of the pericardium not including the epicardium include great vessels, while the epicardium layer just encloses the heart, making it considered one of the walls of the heart.


oh, okay, thanks. Great vessels as in the great cardiac veins, right?

Re: Anatomy and Physiology B/C

Posted: April 4th, 2019, 5:09 pm
by Here
WangwithaTang wrote:
Here wrote:
WangwithaTang wrote:
oh, okay. But isn't the epicardium part of the pericardium?

The epicardium is the innermost layer of the pericardium
The layers of the pericardium not including the epicardium include great vessels, while the epicardium layer just encloses the heart, making it considered one of the walls of the heart.


oh, okay, thanks. Great vessels as in the great cardiac veins, right?

Pulmonary artery and vein, superior and inferior vena cava, aorta, and such

Re: Anatomy and Physiology B/C

Posted: April 4th, 2019, 7:17 pm
by WangwithaTang
Here wrote:
WangwithaTang wrote:
Here wrote:The epicardium is the innermost layer of the pericardium
The layers of the pericardium not including the epicardium include great vessels, while the epicardium layer just encloses the heart, making it considered one of the walls of the heart.


oh, okay, thanks. Great vessels as in the great cardiac veins, right?

Pulmonary artery and vein, superior and inferior vena cava, aorta, and such



oh, so not coronary circulation?

Re: Anatomy and Physiology B/C

Posted: April 4th, 2019, 7:23 pm
by Here
WangwithaTang wrote:
Here wrote:
WangwithaTang wrote:
oh, okay, thanks. Great vessels as in the great cardiac veins, right?

Pulmonary artery and vein, superior and inferior vena cava, aorta, and such



oh, so not coronary circulation?

Coronary circulation branches off from the aorta (part of the great vessels), so it is usually not considered a part

Re: Anatomy and Physiology B/C

Posted: April 4th, 2019, 8:00 pm
by bp31000
WangwithaTang wrote:
Here wrote:
WangwithaTang wrote:Just a quick question, are the three walls of the heart the epicardium, endocardium, and myocardium or pericardium, endocardium, and myocardium? Because I thought the pericardium was the outermost layer of the heart, but the University of Florida invitational (C) said it was epicardium.

The pericardium is a sac enclosing the heart or surrounding the heart wall, rather than being an actual layer of the heart wall.


oh, okay. But isn't the epicardium part of the pericardium?

epicardium has dual role, functions as the outermost layer of heart wall as well as innermost layer of heart covering (Visceral layer of serous pericardium)

so heart wall - from innermost - endocardium (covers the valves also and is continuous with endothelium of blood vessels)
Myocardium
epicardium
heart coverings (pericardium) from innermost - Visceral layer of serous pericardium (same as epicardium)
Parietal layer of serous pericardium (separated from visceral layer by pericardial space and fluid)
Fibrous pericardium