Homework Answers
Answer :
Q
Which of the following statement is true?
Answer :pacemaker cells provide short reflex control of the gastrointestinal tract motility.
Gastrointestinal motility is regulated by a complex interaction of the enteric nervous system, interstitial cells of Cajal (gastrointestinal pacemakers), smooth muscle cells (effectors of gastrointestinal motility), mucosal neuroendocrine cells, and the autonomic nervous system.
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Which of the following statements is true? All of these Phasic contractions maintain the prolonged contractions...
Classify the following statements regarding inputs that control hormone secretion as being either true or false....
Classify the following statements regarding inputs that control hormone secretion as being either true or false. False Only a single type of input can control secretion of a hormone from an endocrine cell. Both parasympathetic and sympathetic inputs to most endocrine glands may occur, some inhibitory and some stimulatory All hormones released from the anterior pituitary can be classified as tropic. All hormones released from the hypothalamus into the hypothalamo- hypophyseal portal system can be classified as tropic The adrenal...
Which of the following statements is incorrect? The mucus secreted by the mucosal layer serves to...
Which of the following statements is incorrect? The mucus secreted by the mucosal layer serves to lubricate the lumen allowing food to pass easily The mucus secreted by the mucosal layer serves to protect the cells of the gastrointestinal tract from digestive enzymes. Some mucosal cells of the digestive system secrete digestive enzymes. Some mucosal tissue of the digestive tract is highly folded which functions to increase surface area of absorption. The mucosal cells of the stomach are responsible for...
Which of the following patients should be cautious when taking an over the counter oral nasal...
Which of the following patients should be cautious when taking an over the counter oral nasal decongestant? An elderly woman taking levothyroxine for hypothyroidism A young woman taking birth control pills Amiddle age man who is taking atenolol for hypertension. A young man with Crohn's disease Which of the following is true about Echinacea? Select all that apply It reduces the symptoms of colds when taken early in the illness Drug interactions include oral anti diabetic drugs and oral contraceptives....
1. All of the following statements are true regarding the nutrient needs of the growing child...
1. All of the following statements are true regarding the nutrient needs of the growing child EXCEPT: (find the false statement) Group of answer choices if breastfeeding is not an option, then an iron-fortified formula should be given to meet the infant's nutrient needs all newborn babies should receive an injection of vitamin K all breastfed babies should receive an iron supplement daily from birth it is generally recommended that all breastfed babies receive a vitamin D supplement, especially if...
Which of the following statements regarding Campylobacter jejuni is incorrect? a.) it causes fever and a...
Which of the following statements regarding Campylobacter jejuni is incorrect? a.) it causes fever and a watery to bloody diarrhea b.) it produces an enterotoxin that stimulates diarrhea c.) it infects the stomach d.) the cells are gram-negative, curved rods with darting motility e.) it is transmitted through ingestion of contaminated chicken, meat, milk, or water
When the sympathetic nervous system is activated, you would expect all of the following responses EXCEPT......
When the sympathetic nervous system is activated, you would expect all of the following responses EXCEPT... Select one: O a. contraction of radial ocular muscle. (Contraction of this muscle would dilate the pupil.) b. vasodilation in skeletal muscle. c. insulin secretion. (Insulin is the hormone responsible for reducing blood glucose levels by moving glucose into cells for storage.) d. inhibition of intestinal peristalsis. (Peristalsis is the muscular movements that propel food through the digestive tract.)
all 3? Which statement about muscle contractions is false? O An action potential in the muscle...
all 3?
Which statement about muscle contractions is false? O An action potential in the muscle cell activates contraction by releasing Car within the muscle. O A single action potential at the neuromuscular junction is sufficient to cause a muscle to twitch. O Summation of twitches leads to a graded increase in the tension that can be generated by a single muscle fiber. The tension generated by a muscle can be varied by controlling how many of its motor units...
Which of the following is true about fibrillations? o they are slow, regular, but unsynchronized contractions...
Which of the following is true about fibrillations? o they are slow, regular, but unsynchronized contractions of muscle fibers they can occur in ventricles they can occur in the Achilles' tendon O only two of the above are true regarding fibrillations o all of the above are true regarding fibrillations
b) Which of the following are true statements about myosin? Select all the true statements. Each...
b) Which of the following are true statements about myosin? Select all the true statements. Each myosin head has a binding site for actin and ATP The interaction between myosin and actin converts chemical energy to mechanicall work muscle contraction, thick and thin filaments slide past each other causing an overall lengthening of the muscle. In a muscle cell, myosin tails group together to form a thick filament The myosin-actin reaction cycle is powered by ATP hydrolysis The tail of...
I Select all that apply. Which of the following is true of opioid/synthetic opioid medications for...
I
Select all that apply. Which of the following is true of opioid/synthetic opioid medications for diarrhea? Most are available only by prescription. O They inhibit gastrointestinal motility, decrease hyper peristalsis, and allow the reabsorption df water and electrolytes. Their side effects include agitation, tachycardia, drowsiness, and dryness of the mouth. OThey include paregoric, diphenoxylate, and atropine (Lomotil) None of the choices
Classify the following statements regarding inputs that control hormone secretion as being either true or false. False Only a single type of input can control secretion of a hormone from an endocrine cell. Both parasympathetic and sympathetic inputs to most endocrine glands may occur, some inhibitory and some stimulatory All hormones released from the anterior pituitary can be classified as tropic. All hormones released from the hypothalamus into the hypothalamo- hypophyseal portal system can be classified as tropic The adrenal...
Which of the following statements is incorrect? The mucus secreted by the mucosal layer serves to lubricate the lumen allowing food to pass easily The mucus secreted by the mucosal layer serves to protect the cells of the gastrointestinal tract from digestive enzymes. Some mucosal cells of the digestive system secrete digestive enzymes. Some mucosal tissue of the digestive tract is highly folded which functions to increase surface area of absorption. The mucosal cells of the stomach are responsible for...
Which of the following patients should be cautious when taking an over the counter oral nasal decongestant? An elderly woman taking levothyroxine for hypothyroidism A young woman taking birth control pills Amiddle age man who is taking atenolol for hypertension. A young man with Crohn's disease Which of the following is true about Echinacea? Select all that apply It reduces the symptoms of colds when taken early in the illness Drug interactions include oral anti diabetic drugs and oral contraceptives....
When the sympathetic nervous system is activated, you would expect all of the following responses EXCEPT... Select one: O a. contraction of radial ocular muscle. (Contraction of this muscle would dilate the pupil.) b. vasodilation in skeletal muscle. c. insulin secretion. (Insulin is the hormone responsible for reducing blood glucose levels by moving glucose into cells for storage.) d. inhibition of intestinal peristalsis. (Peristalsis is the muscular movements that propel food through the digestive tract.)
all 3?
Which statement about muscle contractions is false? O An action potential in the muscle cell activates contraction by releasing Car within the muscle. O A single action potential at the neuromuscular junction is sufficient to cause a muscle to twitch. O Summation of twitches leads to a graded increase in the tension that can be generated by a single muscle fiber. The tension generated by a muscle can be varied by controlling how many of its motor units...
Which of the following is true about fibrillations? o they are slow, regular, but unsynchronized contractions of muscle fibers they can occur in ventricles they can occur in the Achilles' tendon O only two of the above are true regarding fibrillations o all of the above are true regarding fibrillations
b) Which of the following are true statements about myosin? Select all the true statements. Each myosin head has a binding site for actin and ATP The interaction between myosin and actin converts chemical energy to mechanicall work muscle contraction, thick and thin filaments slide past each other causing an overall lengthening of the muscle. In a muscle cell, myosin tails group together to form a thick filament The myosin-actin reaction cycle is powered by ATP hydrolysis The tail of...
I
Select all that apply. Which of the following is true of opioid/synthetic opioid medications for diarrhea? Most are available only by prescription. O They inhibit gastrointestinal motility, decrease hyper peristalsis, and allow the reabsorption df water and electrolytes. Their side effects include agitation, tachycardia, drowsiness, and dryness of the mouth. OThey include paregoric, diphenoxylate, and atropine (Lomotil) None of the choices
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