1. Ra-224
2. I-131
3. U-238
4. C-14
I-131
1. β-cells of Langerhans
2. epithelial cells of stomach
3. SA node
4. dorsal root of spinal nerve
SA node
1. functional efficiency of the feedback system
2. amount of excitation in target tissue
3. degree of inhibition caused
4. function state of the tissue/organ
functional efficiency of the feedback system
1. Liver and islets of Langerhans
2. Hypothalamus and liver
3. Hypothalamus and islets of Langerhans
4. Islets of Langerhans and hypothalamus
Hypothalamus and liver
1. Information carrying
2. Secreted in low amounts
3. Short half-life
4. Protein in nature
Protein in nature
1. Hormone produced in thyroid stimulates metabolism
2. Hormone produced in ovary affects the uterine contraction
3. Hormone produced in small intestine stimulates heart
4. Hormone produced in adrenal cortex stimulates heart beat
Hormone produced in thyroid stimulates metabolism
1. frog
2. rat
3. rabbit
4. man
frog
1. Thyroid — Epinephrine
2. Alpha cells of pancreas — Glucagon
3. Anterior pituitary — Adrenaline
4. Stomach epithelium — Secretin
Alpha cells of pancreas — Glucagon
1. Lethargy
2. Mental retardation
3. Oedema
4. Rise in blood urea
Rise in blood urea
1. decreased rate
2. systolic arrest
3. sustained increased rate
4. first increased rate than normal rate
first increased rate than normal rate