CHEMICAL COORDINATION AND INTEGRATION
2020 MARCH
1. ‘Adrenal medulla is the
centrally located tissue in the adrenal gland, whereas adrenal cortex is
located outside.’
How do adrenal cortex and medulla differ in their function? (Score 2)
Answer:
Adrenal cortex secretes steroid hormones such as cortisol, aldosterone,
sex corticoid etc.
Adrenal medulla secretes emergency hormones (Adrenalin and
noradrenalin).
2. Complete the given table
appropriately. (Score 3)
|
Gland |
Hormones |
Function |
|
i. (A) ............ |
Androgens |
Development of
male accessory sex organs |
|
ii. Thymus |
(B) ............... |
(C)
.................. |
|
iii.
(D) ............ |
Glucagon |
Maintains
normal blood glucose levels |
|
iv.
Pineal |
(E) ............... |
(F)
................... |
Answer:
(A) Testis
(B) Thymosins
(C) Gives immunity
(D) Pancreas (Islets of Langerhans)
(E) Melatonin
(F) 24-hr diurnal rhythm
2019 JULY
1. Identify the picture and
label the parts A, B, C, D. (Score 2)
Answer:
The picture is Hypothalamus and Pituitary.
(A) Hypothalamus
(B) Posterior pituitary
(C) Anterior pituitary
(D) Portal circulation
2. Following are the
hormones-produced by tissues other part than endocrine glands. Write where it
is produced and mention the functions of each. (Score 3)
(a) Cholecystokinin
(b) Gastrin
(c) Secretin
Answer:
They are secreted from Gastro-intestinal tract.
a. Cholecystokinin: Stimulates secretion of bile from gall
bladder and pancreatic enzymes from pancreas.
b. Gastrin: Stimulates gastric glands to secrete
HCl and pepsinogen.
c. Secretin: Stimulates exocrine pancreas to secrete
water and bicarbonate ions.
2019 MARCH
1. Note the relationship in
the first pair and then complete the second pair. (Score 2)
a. Insulin: Hypoglycaemic hormone
......................:
Hyperglycaemic hormone.
b. Over
secretion of Growth hormone: Gigantism
Low secretion of Growth hormone:
.......................
Answer:
(a) Glucagon (b)
Dwarfism
2019 MODEL
1. Anitha saw a poisonous
snake on her way to school, she was frightened and her heart and breathing rate
increased: (Score 2)
(a) Name the hormones which are dominant at that time in her blood.
(b) Which endocrine gland produce the hormone?
(c) To which organ this endocrine gland is attached?
Answer:
(a) Adrenalin and noradrenalin
(b) Adrenal gland
(adrenal medulla)
(c) Kidney
2. Functions of certain
hormones are given below.
Identify the hormone. (Score 2)
(a) Regulation of metabolism
(b) Differentiation of
'T' cells
(c) Lower blood sugar
(d) Support pregnancy
and act on mammary gland.
Answer:
(a) Thyroxin
(b) Thymosins
(c) Insulin
(d) Progesterone
2018 AUGUST
1. Expand the following
hormones: (Score 2)
a)
TSH b) ACTH c) ANF d)
FSH
Answer:
(a) Thyroid Stimulating Hormone
(b) Adrenocorticotrophic
Hormone
(c) Atrial Natriuretic
Factor
(d) Follicle
Stimulating Hormone
2. Name the hormones whose
deficiency is responsible for the following:
a) Dwarfism b) diabetes
mellitus
c) Cretinism d) Diuresis
Answer:
(a) Somatotropin (GH)
(b) Insulin
(c) Thyroxin
(d) ADH (Vasopressin)
3. Complete the table given
below by using appropriate terms. (Score 3)
|
Gland |
Hormone |
Function |
|
Pancreas |
Glucagon |
…..(a)….. |
|
…..(b)….. |
Thymosin |
Immunity |
|
Pineal
gland |
…..(c)….. |
24-hr
diurnal rhythm |
|
Pituitary
gland |
Oxytocin |
…..(d)….. |
|
…..(e)….. |
Parathyroid
hormone |
Increases
Ca2+ level in blood |
|
Thyroid |
TCT/
Thyrocalcitonin |
…..(f)….. |
Answer:
(a) Increases blood glucose level
(b)
Thymus
(c)
Melatonin
(d)
Contraction of smooth muscles
(e)
Parathyroid gland
(f)
Decreases Ca2+ level in blood
2017 MARCH
1. Complete the table. (Score 2)
|
Endocrine gland |
Hormone |
Functions |
|
Heart
|
.…..(A)…… |
Decreases
blood pressure |
|
Pancreas |
Insulin |
………(B)……… |
|
…..(C)….. |
Erythropoietin |
Stimulates
erythropoiesis |
|
Thymus |
……..(D)…… |
Gives
immunity |
Answer:
(A) ANF (Atrial Natriuretic Factor)
(B) Decreases blood glucose level
(C) JGA in kidney
(D) Thymosins
2016 MARCH
1. Hormonal abnormality is responsible for certain diseases in man. List of
some diseases are given below. Write the hormone related to each of it. (Score 2)
a)
Diabetes mellitus b) Gigantism
c)
Diabetes insipidus d) Cretinism
Answer:
(a) Insulin
(b) Somatotropin (GH)
(c) Antidiuretic hormone (ADH)
(d) Thyroxin
OR
Like insulin and glucagon, PTH and
calcitonin are antagonistic in their action in maintaining normal blood calcium
level. Substantiate this statement. (Score 2)
Answer:
This statement is true. Insulin and
glucagon are antagonistic in their action because Insulin lowers glucose level
in blood whereas glucagon rises blood glucose level. Thus blood glucose level
is balanced.
In the same way, PTH and calcitonin are
antagonistic in their action because PTH rises blood calcium level and
calcitonin lowers blood calcium level. Thus normal blood calcium level is
maintained.
2015 SEPTEMBER
(IMPROVEMENT)
1. Write any two examples for the following. (Score 2)
a.
Hormones which control blood-sugar level.
b.
Hormones which control sexual development.
Answer:
(a)
Glucagon and Insulin.
(b) Androgen
and Oestrogens.
2015 MARCH
1. Match columns B and C with column A. (Score 2)
|
A |
B |
C |
|
Thyroid |
Insulin |
Weak immunity |
|
Pituitary |
Thymosin |
Gigantism |
|
Pancreas |
Growth hormone |
Diabetes mellitus |
|
Thymus |
Thyroxin |
Goitre |
Answer:
|
A |
B |
C |
|
Thyroid |
Thyroxin |
Goitre |
|
Pituitary |
Growth hormone |
Gigantism |
|
Pancreas |
Insulin |
Diabetes mellitus |
|
Thymus |
Thymosin |
Weak immunity |