Cells die at the time of release of secretory materials in
holocrine gland
apocrine gland
merocrine gland
mixed or apocrine gland
Zymogenic cells of gastric gland secrete
pepsinogen
trypsin
pepsin
chymotrypsin
A.
pepsinogen
The peptic cells or chief cells or zymogenic cells of gastric gland secrete pepsinogen. The enzyme pepsinogen has no proteolytic activity. It is the inactive precursor of pepsin. The proenzyme pepsinogen on exposure to HCl gets converted into the active enzyme pepsin which is the proteolytic enzyme of the stomach.
Pancreatic acinar cells (exocrine part of pancreas) produce pancreatic juice that contains protein-digesting enzymes, namely trypsin, chymotrypsin and carboxypeptidase and carbohydrases like pancreatic a-amylase and lipase.
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
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