The pancreases produces inactive enzymes to prevent autodigestion.
Select one:
True
False
This layer of the heart contains the vast majority of contracting cardiac cells.
Select one:
a. peritoneum.
b. pericardium.
c. myocardium.
d. pleural sac.
e. epicardium.
This protein hormone stimulates a decrease in blood glucose.
Select one:
a. insulin.
b. renin.
c. digestive enzymes.
d. glucagon.
e. cortisol.
When the atrioventricular and semilunar valves are closed, there is no change in blood volume in the ventricles.
Select one:
True
False
Answer:
Answer 1. True
Explanation: Pancreas is a mixed gland with both exocrine and endocrine segments. While the endocrine portion of the pancreas remains involved in the hormone production, the exocrine segment is involved in the process of digestion. They release a juice called as the pancreatic juices and they contain a number of digestive enzymes to help in the process of digestion.
One such component present in the pancreatic juice is the zymogen (inactive protein digesting enzyme) named trypsinogen. The protein digesting enzymes are always released in a inactive form and they require a prior activation for the dietary protein digestion
Answer 2. Option C (Myocardium)
Explanation: Human heart has three layers; the outermost being the pericardium, the middle most being the myocardium and the innermost being the endocardium. Among all these layers, the myocardium is the thickest and hence contains a large number of the cardiac muscle cells
Answer 3. Option A (Insulin)
Explanation: Insulin is a hormone which is released from the beta cells of the islets of Langerhans of pancreas (endocrine segment). The hormone acts by converting the free glucose molecules to glycogen; the process is called as Glycogenesis and the site is liver.
Deficiency of insulin increases the blood glucose levels, and the condition is called as Diabetes
Answer 4. True
Explanation: This phase is also called as the phase of the isovolumic ventricular relaxation phase. During this phase the ventricles undergoes the diastolic phase that is they undergo the phase of relaxations during which both the atrio-ventricular and the semilunar valves remains closed thus keeping the total blood volume within the ventricles unchanged
The pancreases produces inactive enzymes to prevent autodigestion. Select one: True False This layer of the...
Three of the statements below are True one is False. Select the statement that is FALSE. a. A decrease in glucose levels levels triggers an increase in secretion of glucagon by the pancreas. b. High cortisol levels generally cause a decrease in GnRH secretion by the hypothalamus. c. High estrogen levels in the blood will tend to decrease secretion of LH and FSH by the anterior pituitary.