introduction

Question 1

why is there a need for the endocrine system?

Answer 1

1. in the neural system neural coordination is fast and exact but short-lived whereas in the endocrine system chemical coordination is usually slow and widespread but long-lasting.
2. all cells of our body are not innervated by nerve fibres but the cellular function need to be continuously regulated so a special kind of coordination and integration has to be provided. this function is carried out by endocrine system.

Question 2

branch of biology which deals with the study of endocrine system and its physiology is known as ?

Answer 2

endocrinology

Question 3

father of endocrinology?

Answer 3

Thomas addison

Question 4

difference between the endocrine gland and the exocrine gland?

Answer 4

endocrine gland: 1. these glands lack duct and are called ductless gland ,they pour their secretion directly into blood.
2. they secrete hormones.
exocrine gland: 1. these glands have duct.
2.they secrete enzyme

Question 5

the scientific definition of hormone?

Answer 5

hormones are non-nutrient chemicals which act as intercellular messengers and are produced in trace amounts.

Question 6

what is organised endocrine gland?

Answer 6

where hormone-producing cells are present in cluster/tissue form called organised endocrine glands.

Question 7

example of organised endocrine gland

Answer 7

1. pituitary gland
2. pancreas
3. parathyroid
4. pineal
5. thyroid
6. thymus
7. adrenal
8. gonads

Question 8

what is non-organised endocrine gland?

Answer 8

where hormone-producing cells are present in scattered form called non-organised endocrine tissue.

Question 9

example of non organised endocrine gland

Answer 9

1. heart
2. liver
3. kidney
4. gastrointestinal tract

Question 10

the term hormone was coined by

Answer 10

starling

Question 11

first hormone discovered was?

Answer 11

secretin

Question 12

who discovered the first hormone?

Answer 12

Bayliss and starling in 1902

Question 13

who said “hormone is chemical messenger”

Answer 13

bayliss and starling

Question 14

“hormone is information transferring molecule” given by

Answer 14

huxley

Question 15

chemical nature of secretin

Answer 15

protein

Question 16

secretin secreted from

Answer 16

s cells of duodenum (small intestine)

Question 17

secretin act on

Answer 17

secretin acts on pancreas for secretion of pancreatic juice

Question 18

different types of messenger

Answer 18

1. endocrine messenger
2. juxtacrine/paracrine messenger
3. autocrine messenger
4. neurocrine messenger