BSCI 440 Study Guide - Midterm Guide: Intercostal Nerves, Intercostal Muscle, Tidal Volume

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limebee726

15 Sep 2015

School

University of Maryland

Department

Biological Sciences Program

Course

BSCI 440

Professor

David Sandstrom

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Document Summary

Write out the reaction that generates hco3 and h+ from co2. Co2 + h2o h2co3 h+ + hco3- What is the chloride shift, and what role does it play in keeping the reaction that converts co2 to. It balances the charge and moves hco3 out into the plasma so that co2 can sintue to enter the cell and continue the rxn. Hb buffers protons to keep the ph from going too low; it decreases the saturation of o2 bc it decreases ph. Bc less o2 there you want to pick up co2 at tissues and drop at lungs, haldane effect. The hco3- comes into the rbc and the cl- leaves. Reverse of reaction at tissues, converted back into co2 (+h2o), very fast thanks to ca. Arterial po2 need to be below ~60mmhg before significant increase in ventilation not sensitive enough for normal range.

Related Questions

3. Ms. X is a 35 year old school teacher who suffers from acid indigestion and self-medicates by drinking baking soda dissolved in water.

Which acid-base disorder would you expect to develop in this client?

A. Respiratory Acidosis

B. Respiratory Alkalosis

C. Metabolic Alkalosis

D. Metabolic Acidosis

4. Ms. X is a 35 year old school teacher who suffers from acid indigestion and self-medicates by drinking baking soda dissolved in water.

What effect does metabolic acidosis have on respiratory rate?

	a.	decrease
	b.	increase
	c.	both increase and decrease
	d.	none of the above

5. When comparing systemic capillaries to pulmonary capillaries, which of the following statements is true?

	a.	The hydrostatic pressure at the arteriolar end of the systemic capillary is higher that the hydrostatic pressure at the arteriolar end of the pulmonary capillaries.
	b.	The hydrostatic pressure at the VENULAR end of the systemic capillary is LOWER than the hydrostatic pressure at the VENULAR end of the pulmonary capillaries.
	c.	The OSMOTIC pressure at the VENULAR end of the systemic capillary is LOWER than the osmotic pressure at the VENULAR end of the pulmonary capillaries.
	d.	None of the above

6. The osmotic pressure within a capillary is an absorptive force. The osmotic pressure develops as a result of which of the following?

	a.	carbohydrates
	b.	lipids
	c.	proteins
	d.	nucleic acids

7. Which of the following organs synthesizes albumin?

	a.	kidney
	b.	liver
	c.	spleen
	d.	heart

8. Ascites is due to which of the following?

	a.	liver dysfunction
	b.	reduced plasma albumin levels
	c.	excessive loss of fluid from to capillary into the interstitial space
	d.	all of the above

9. Which of the following diseases is associated with ascites?

	a.	alcoholism
	b.	MALNUTRITION
	c.	both a and b
	d.	none of the above

10. Which of the following tteatments isused to resolve ascites caused by alcoholic liver dicrease

	A.	paracentesis
	B.	liver transplant
	C.	CESSATION OF ALCOHO; COMSUMPTION
	D.	all of the above

QUESTION 11:

At pH 7.4, some of the H₂CO₃ produced from a reaction catalyzed by carbonic anhydrase immediately dissociates into

A. H⁺, CO₂

B. H⁺, HCO₃^-

C. OH^-, CO₂

D. OH^-, HCO₃^-

	a.	.
	b.	.
	c.	.
	d.	.

12. The pH of the patientâs blood is 7.7. The patient is alkalotic and her ratio of bicarbonate to carbonic acid is

A. 10 to 1

B. 20 to 1

C. 30 to 1

D. 40 to 1

E. 50 to 1

13. THE NORMAL VALUE FOR THE BICARBONATE ION IS WHICH OF THE FOLLOWING?

	a.	240 mEq/l
	b.	24 mEq/L
	c.	40 mEq/L
	d.	none of the above

violetcattle746

True of False: Freshwater environments have a higher concentration of oxygen than saltwater environments.

QUESTION 2 If the difference in partial pressure of gas on either side of the barrier to diffusion is 0, which of these events will occur?

The area for gas exchange will increase to accommodate this similarity.

The constant for diffusion will decrease.

The rate of diffusion will be 0.

The distance thickness of the barrier to diffusion will also be 0.

QUESTION 3 On the x-axis of the oxygenâhemoglobin equilibrium curve is the partial pressure of oxygen in tissues. Which type of blood is most likely to be represented by the right-hand side of the axis? (Hint: the oxygen-hemoglobin equilibrium curve is figure 45.14 in your book on pg 913)

blood found in the left ventricle

blood found in the right atrium

blood found in the superior vena cava

blood found in the inferior vena cava

QUESTION 4 Which of these is an example of pulmonary circulation?

Blood is pumped from the right ventricle to the lungs.

Blood is pumped from the left ventricle to the aorta.

Blood is pumped from the aorta to the cardiac vein.

Blood is pumped from the inferior vena cava to the right atrium.

QUESTION 5 O2 will diffuse from blood to tissue faster in response to which of the following conditions?

an increase in the PO2 of the tissue

a decrease in the PO2 of the tissue

an increase in the thickness of the capillary wall

a decrease in the surface area of the capillary

QUESTION 6 Which of the following promotes oxygen release from hemoglobin?

a decrease in temperature

a decrease in carbon dioxide levels

a decrease in pH

a decrease in carbonic anhydrase

QUESTION 7 How does the medulla oblongata sense the amount of carbon dioxide in the blood?

A. Carbonic anhydrase produced by cells performing cellular respiration is exported and travels though the blood, and binds to a receptor on the medullary respiratory center, which causes a signal amplification resulting in a change in gene expression which results in the production of proteins that will cause the diaphragm to contract

B. CO2 produced by cells performing cellular respiration reacts with blood plasma for form an acid, which increases the pH of the blood, which causes the medullary respiratory center to contract the diaphragm

C. CO2 produced by cells performing cellular respiration reacts with blood plasma for form an acid, which decreases the pH of the blood, which causes the medullary respiratory center to contract the diaphragm

D. A and B

E. A and C

QUESTION 8 Which of the following parts of the lung are considered "dead space"? A. The alveoli B. The trachea C. The bronchi D. B and C E. All of the above

QUESTION 9 Which of the following blood vessels have the thinnest walls?

arteries

arterioles

capillaries

venules

veins

QUESTION 10 How does the interstitial fluid return to the bloodstream?

A. Interstitial fluid flows into the capillary where the osmotic pressure driving fluid into the bloodstream is greater than the blood pressure driving fluid out of the blood

B. Interstitial fluid flows into the capillary where the blood pressure driving fluid into the bloodstream is greater than the osmotic pressure driving fluid out of the blood

C. Interstitial fluid leaves the tissue via lymphatic ducts and travels through the lymphatic system, which returns the fluid to the veins. D. A and C

E. B and C

QUESTION 11 True or False: When an electrocardiogram (EKG or ECG) shows a flat line (aka asystole), medical personnel will restart the heart using a defibrillator.

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BSCI 440 Study Guide - Midterm Guide: Intercostal Nerves, Intercostal Muscle, Tidal Volume

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