Describe how the motility and secretions of the stomach contribute to the digestive process in a healthy human, making sure that you describe difference between the functional regions of the stomach.

Define the terms. Please type the answer.

1.) lymphadenopathy

2.) polymorphonucleocytes

3.) leukopenia

4.) anemia

5.) thrombocytopenia

6.) immunodeficiency

7.) retrovirus

8.) protease inhibitors

Which statement about the microscopic anatomy of skeletal muscle fibers is incorrect?

a. Myofibrils fill the sarcoplasm.

b. Striations result from the ordered (regular) alignment of thick and thin filaments.

c. Skeletal muscle cells are connected via intercalated discs.

d. Contain mitochondria for energy.

e. All are true.

Koko is a trained endurance runner who is 28 years old and 1.77 m tall. His pulmonary function test gives you the following results: FVC = 5.04 L; FEV1 = 4.55 L. What does the ratio of these two variables tell you? How do Koko’s values compared to a non-trained individual?

2 ) Explain why the M2 subtype of muscarinic ACh receptors is found on the autorhythmic cells of the sinoatrial node and the M3 subtype is found on smooth muscle fibers of the bronchioles. (6 pts)

Does aging affect the immunological advantages of regular exercise. If so, how and why ?

All of the following statements are true EXCEPT:

1. Elevating the ribs decreases the size of the thorax

2. when the diaphragm relaxes, it takes on a rounded dome - like shape

3. changes in the size of the thorax bring about inhalation and exhalation

4. When the diaphragm contracts, it pulls the floor of the thoracic cavity inferiorly

2. why do you think mucus production is especially important in the olfactory epithelium?

Describe two structures that increase the absorptive surface area of the small intestine...looking for an good and understandable explanation answer, for this question, question

describe two enzymes found in the mouth, two enzymes found in the stomach, and two enzymes found in the small intestines and describe one organic compound that each enzyme breaks down.....i need a good and understandable explanation , answer for this question ,thank u

True false questions

Neuron cell bodies are only found in CNS but not in PNS, while axons are the opposite. True False

If the threshold for AP is set at -60mV, a neuron receives total 8 EPSPs of -65mV and 6 IPSPs of -75mV, after the summation, this neuron will launch an AP.  True  False

Sodium-potassium exchange pump is the key factor in maintaining the concentration gradients of the cations across the plasma membrane. True  False

The resting potential, -70mV, being close to K⁺ equilibrium potential, -90mV, is because neuron is much leakier to K⁺ than to Na⁺. True False

Axon hillock is where the threshold potential is set to launch an action potential. True False

K⁺ leak channel is responsible for both hyperpolarization and repolarization in the action potential. True False

1. To be accurate in measuring blood pressure, a person should not drink coffee and smoke cigarette for at least 24 hours from the time of measurement. (True/ False)

2. The term blood pressure usually refers to the pressure in the arteries, veins, and capillaries. (True/ False)

3. The Angiotensin-1 is a substance normally present in the:

a. Blood

b. liver

c. Kidney

d. Bone marrow

4. Systolic blood pressure of less than 135 mmHg and diastolic blood pressure of less than 95 mmHg is called hypotension. (True/ False)

5. Systolic blood pressure of the vein equal to 70 mmHg. (True/ False)

6. During exercise, for example, a greater percentage of the total blood flow is diverted to skeletal muscles leading to a sudden drop in blood pressure. (True/ False)

7. One hormone regulates blood pressure:

a. Prolactin

b. Vasopressin

c. Aldosterone

d. Corticosteroid

8. In measuring diastolic blood pressure, heart sound must be heard by the stethoscope when the sphygmomanometer recording normal blood pressure of 80 mmHg.  (True/ False)

9. High blood cholesterol interferes with the elasticity of the arteries resulting in increased blood pressure.  (True/ False)

10. Hormones regulate blood pressure by the alternation of:

a. Body temperature

b. Cardiac output

c. Venous blood retention

d. Pulse rate

11. To get the best results in measuring blood pressure, the arm must be resting on a table so that it is about the same level as the heart.  (True/ False)

12. Typically blood pressure is usually measured in the brachial artery in the left arm by using sphygmomanometer and stethoscope. (True/ False)

13. Renin as hormone secrets by:

a. Kidney

b. Liver

c. Bone marrow

d. Spleen

14. Both blood pressure and pulse rate are related to heart pumping blood in the arterial blood vessels. (True/ False)

Compare and contrast cardiac and skeletal muscle in the following:

Cellular structure

Excitation-Contraction Coupling

Action potential of Skeletal Muscle cells and Cardiac Contractile muscle cells

Production of ATP

Role of Calcium

Mechanisms for increased strength/force of contraction