Cells die at the time of release of secretory materials in
holocrine gland
apocrine gland
merocrine gland
mixed or apocrine gland
Which one of the following is called intra-specific chemical messenger?
Pheromones
Prostaglandins
Corticotrophin
Catecholamines
Which one of the following secretes glucagon?
Beta () cells of islets of Langerhans
Alpha () cells of islets of Langerhans
Acidophilic cells of adenohypophysis
Basophilic cells of adenohypophysis
Which one of the following enzymes is responsible for the conversion of norepinephrine to epinephrine?
Catecholamine-O-methyltransferase
Phenylalanine-N-methyltransferase
DOPA decarboxylase
Monoamine oxidase
A.
Catecholamine-O-methyltransferase
Phenylalanine-N-methyltransferase (PNMT) is an enzyme found in the adrenal medulla that converts nor-epinephrine to epinephrine. It is a protein whose encoding gene is found on chromosome 17 in humans. It catalyses the transfer of a methyl group from SAM (S-adenosyl-L-methionine) which is a factor to nor-epinephrine, converting it into epinephrine.
The hormone that stimulates the release of pancreatic juice is
secretin
glucagon
inhibin
insulin
Match the following Columns.
Column I | Column II |
A. Hyperthyroidism | 1. Myxedema |
B. Hyposecretion of glucocorticoids | 2. Addison's disease |
C. Hypothyroidism- I | 3. Increased metabolic rate |
D. Hyperparathyroidism |
4. Cushing's syndrome 5. Kidney stone |
A- 3; B- 2; C- 1; D- 5
A- 3; B- 4; C- 1; D- 2
A- 1; B- 4; C- 3; D- 2
A- 1; B- 2; C- 3; D- 5
What would not take place if chromaffin cells of adrenal medulla undergoes oncogenesis?
High blood sugar and glucosuria
High BMR
Pheochromocytomas
Low blood pressure
Glands in a vertebrate body originate from
ectoderm, mesoderm and endoderm
ectoderm and endoderm
mesoderm
ectoderm