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13 Aug 2018

The glucose used by the neurons for ATP production comes from:

a) Nutrients absorbed from digestion and glucose produced by the liver.

b)The breakdown of fat in adipose tissue and glycogen in muscle tissue.

c)Only Nutrients absorbed from digestion.

d)Only gluconeogenesis in the liver.

What can receptors detect?

a)Loss of homeostasis

b)Loss of homeostasis and a return to homeostasis.

c) A return to homeostasis.

d)Need for medical attention.

Which of the following is not a role of the skeletal system in maintenance of homeostasis?

a) Calcium Storage

b) Protection

c) Support

d) Phosphorous storage

What controls blood pressure in your body?

a) The hypothalamus

b) pituitary gland.

c) medulla oblongata

d) all of the above

What increases blood pressure?

a) Decreased heart rate.

b) Decreased blood vessel resistance

c) Increased blood volume

d) all of the above

What ends a hormonal response to increase blood pressure?

a) Low blood pressure

b) High blood pressure

c) A return to homeostasis.

d) Low blood pressure and a return to homeostasis.

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16 Aug 2018
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Related questions

Cells of the pancreas (an organ located in the abdomen that is part of the digestive system) determine the set point for blood glucose (blood sugar). After a meal, glucose levels are elevated and the pancreas detects the change and produces insulin. Insulin and glucose move into the bloodstream where they are transported to different areas of the body. The insulin allows glucose to move from the bloodstream into the muscles and liver where the glucose is stored or used as energy for cellular work.

1. The scenario describes a case in which the pancreas accepts information that the body has absorbed sugar during digestion. Research diseases related to glucose levels and answer each question.

a. Describe what might happen (in relation to homeostasis) if a person’s glucose levels became too high and the pancreas did not secrete enough insulin.

b. What is the common name for this disease?

c. List the symptoms of the disease and its treatment options.

1) The parasympathetic nervous system generally promotesdigestion. Innervation is via the vagus nerve. Ach binds tomuscarinic receptors. True or False?

2) Which of the following statements is correct?

a) The liver receives oxygenated blood from the hepatic arteryand deoxygenated blood from the hepatic portal vein. Branches ofboth veins carry blood into liver sinusoids. Hepatocytes absorboxygen, most of the nutrients, and some toxins. Needed substancesare secreted back into the blood. Blood then drains into thecentral vein and into a hepatic vein.

b) The liver receives deoxygenated blood from the hepatic arteryand oxygenated blood from the hepatic portal vein. Branches of bothveins carry blood into liver sinusoids. Hepatocytes absorb oxygen,most of the nutrients, and some toxins. Needed substances aresecreted back into the blood. Blood then drains into the centralvein and into a hepatic vein.

c) The liver receives oxygenated blood from the hepatic arteryand deoxygenated blood from the hepatic portal vein. Branches ofboth veins carry blood into liver central vein. Hepatocytes absorboxygen, most of the nutrients, and some toxins. Needed substancesare secreted back into the blood. Blood then drains into thesinusoids and into a hepatic vein.

d) The liver receives oxygenated blood from the hepatic arteryand deoxygenated blood from the hepatic portal vein. Branches ofboth veins carry blood into liver sinusoids. Kupffer cells absorboxygen, most of the nutrients, and some toxins. Needed substancesare secreted back into the blood. Blood then drains into thecentral vein and into a hepatic artery.

3) Regulation of secretion of saliva involves:

a) Parasympathetic and sympathetic stimulation

b)Action of the inferior and superior salivatory nuclei in themedulla

c)Activity of the myenteric plexus

d)Activity of the submucosal plexus

4) Bile formed in the liver is transported to the gall bladderfor storage through which pathway? (Some steps may be omitted)

a)Bile duct, right and left hepatic ducts, common hepatic duct,cystic duct

b)Common hepatic duct, right and left hepatic ducts, bile duct,cystic duct

c) Right and left hepatic ducts, bile ducts, common hepaticduct, cystic duct

d) Bile ducts, common hepatic duct, cystic duct, right and lefthepatic ducts

5)Which of the following statements is incorrect?

a)Sodium ions are transported out of absorptive cells bybasolateral sodium pumps.

b) Negatively charged ions follow sodium or are moved out byactive transport.

c)Most water soluble vitamins are absorbed by activetransport.

d) Water absorption in the GI tract involves osmosis

6) Insulin is needed for carbohydrate metabolism because it

a)is required for the breakdown of complex carbohydrates

b)transports glucose in the bloodstream.

c)acts as a glucose receptor molecule on the cell surface.

d) is part of an active transport mechanism required for entryof glucose into cells

e)increases the insertion of a particular type of glucosetransport protein into the cell membrane

The following are four aspects of hepatic (liver) function. Rank them in order of largest to smallest level of organization. A. a protein expressed on the surface of a hepatocyte (liver cell) that mediates movement of glucose across the plasma membrane B. the unusual arrangement of blood vessels that delivers nutrients absorbed from the small intestine directly to the liver. C. small tubes (canaliculi) within the liver that move bile secreted by hepatocytes into ducts that ultimately deliver it to the gall bladder for storage. D. synthesis and exocytosis of serum albumin (a protein) by hepatocytes

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