Regarding the human brain (select the MOST CORRECT statement):
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The primary motor cortex is located in the frontal lobe. |
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The diencephalon is composed of two structures, the cerebral cortex and the thalamus. |
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Sensory information from the skin of the big toe is relayed via ascending spinal tracts to the primary motor cortex |
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Both a) and b) are correct and c) is incorrect. |
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a), b) and c) are all correct. |
Human sensory systems (select the MOST CORRECT statement):
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Sensory information for both vision and touch is relayed to separate regions of the cerebral cortex, but in both cases relies on ascending spinal tracts to reach the brain. |
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The location of a stimulus such as touch is coded by the amplitude of the action potentials in the afferent neuron. |
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Baroreceptors in the aortic arch respond to changes in blood pressure that are sensed by mechanoreceptors. |
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Both a) and b) are correct and c) is incorrect. |
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a), b) and c) are all correct. |
In: Anatomy and Physiology
Select the MOST CORRECT answer. In a cardiac myocyte, changes in the permeability of ions can lead to a change in membrane potential. In...
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A conducting cardiac myocyte, the rapid depolarization is caused by the opening of T-type calcium channels. |
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A contractile cardiac myocyte, the rapid depolarization is caused by the opening of L-type calcium channels. |
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Both conducting and contracting cardiac myocytes, the influx of sodium and calcium cause the membrane to depolarize and the efflux of potassium causes repolarization. |
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Both a) and b) are correct and c) is incorrect. |
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a), b) and c) are all correct. |
Select the MOST CORRECT answer. An athlete was attempting to improve their performance through doping, the act of taking illegal drugs to increase red blood cell count. Unfortunately, the athlete experienced a reduction of performance instead. Which of the following best explains this outcome?
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Heart rate and stroke volume were increased and therefore cardiac output was reduced. |
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An increase in the viscosity of the blood caused total peripheral resistance to increase, which reduced blood flow. |
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A decrease in mean arterial pressure resulted because of the increase in total blood volume. Because the bulk blood flow was equal between both sides of the heart, the stroke volume decreased over time. |
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Both a) and b) are correct and c) is incorrect. |
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a), b) and c) are all correct. |
In: Anatomy and Physiology
In: Anatomy and Physiology
1.What happens when more than one sperm fertilizes an egg? Do you get a “viable” pregnancy? Why or why not?
2.What is the role of the collecting ducts in maintaining homeostasis
In: Anatomy and Physiology
Apply information from Module 5- Cardiovascular System. For your discussion board post, list two risk factors for cardiovascular disease and briefly comment on societal impact. List two lifestyle modifications for prevention of cardiovascular disease. Respond to at least one other student's post and cite your references in APA format.
In: Anatomy and Physiology
1.What role do the hormones FSH and LH play in male sexual development
2.Describe how a primordial follicle develops into a Graffian follicle and ovulates, and then what happens to the follicle?
3.Explain how high blood pressure can damage your kidneys
In: Anatomy and Physiology
1.Alcohol inhibits the production of ADH. What effect will this have on urine production? What do we call a molecule that has this effect
2.What are the different compartments of the body and how does fluid move between them.
In: Anatomy and Physiology
1.How does female hormonal birth control work? If you were to develop a male hormonal birth control, what pathway would you target and why?
2.What happens when more than one sperm fertilizes an egg? Do you get a “viable” pregnancy? Why or why not
In: Anatomy and Physiology
1.List three different molecules that are filtered OUT of the blood by the glomerulus. What do these molecules have in common?
2.What types of molecules are reabsorbed in the proximal convoluted tubule? What is the primary method of reabsorption in the PCT? What ion is involved?
In: Anatomy and Physiology
Body Mass = 85.7 kg ISF hydrostatic pressure = 1 mmHg
Hematocrit = 45% ISF osmotic pressure = 0 mmHg
Blood pressure = 117/72 (mmHg) Arteriole end of capillary hydrostatic pressure = 34 mmHg
Ejection Fraction = 60% Net Filtration Pressure (arteriole end) = 11 mmHg
EDV = 140 ml Net Filtration Pressure (venule end) = -8 mmHg
Cardiac Output = 6.3 L/min
In: Anatomy and Physiology
Explain how the anion gap measurement would differ if acidosis were caused by respiratory versus metabolic illness. Hint: think about what happens to the bicarbonate in each
In: Anatomy and Physiology
In: Anatomy and Physiology
6- According to the definition of an acid and the definition of a base, will the pH increase, decrease, or remain the same when NaCl is added to pure water? Explain.
7- What is a hydrogen bond? Explain how a hydrogen bond forms.
8- What feature of a soap molecule gives it cleaning ability?
9- What ion is responsible for a) acidic properties and b) basic properties?
10- Explain why a pH of 7 indicates a neutral solution -why not some other number?
In: Anatomy and Physiology
=
1)What is the functional unit of the kidney
2)What are the two parts of this unit?
3)What are each of these parts primarily responsible for?
4)Why do we need our kidneys to perform their job?
5)Why do we need our kidneys to perform their job?
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8. Identify the preservative: p. 340, 10th ed. “Other Agents”
a.) _________________________________ to preserve dried fruits and molasses.
b.) _________________________________ used to retard mold in bread.
c.) _________________________________ used to preserve cured meats and some cold cuts.
d.) ___________ was a “wonder chemical” after WWII because it helped 1 billion people lived malaria-free.
b.) An antiseptic containing Hexachlorophene called phisohex was used extensively in hospitals in the past but is now banned. Why? see PUBLIC HEALTH BOX
_______________________________________________________________________________________
c.) What are alkylating agents and why these chemicals can cause cancer? Give an example. ___________________________________________________________________________________
d.) Ethylene oxide is used at a concentration of _________________at __________ (what temperature?) for _____________ (how long/length of time?).
4. a) Why are bar soaps illegal in many public restrooms?
In: Anatomy and Physiology
In: Anatomy and Physiology