Chemical Control in Humans

Q.

Exocrine glands are called ductless glands.

1. True
2. False

Q.

Name the teeth which are used for chewing food

Q.

Are ducts present in endocrine glands?

Q.

Endocrine glands are

1. Ductless glands whose secretions pour directly into blood

2. Have ducts and pour their secretion into blood directly

3. Have duct which straightway pour secretion into target organs

4. All of the above

Q.

Name the following:

Gaps in myelin sheath enclosing the axon.

Q. Identify the missing links.
$\begin{array}{ccc}\text{Hormone}& \text{Gland}& \text{Function}\\ \text{P}& \text{Pancreas}& \text{Decreases blood sugar level.}\\ \text{Adrenaline}& \text{Q}& \text{Controls behaviour during emergency situations.}\\ \text{Oxytocin}& \text{R}& \text{S}\end{array}$

1. P - Glucagon, Q - Adrenal, R - Pituitary, S - Controls calcium level.
2. P - Insulin, Q - Adrenal, R - Pituitary, S - Contracts uterus during parturition.
3. P - Insulin, Q - Thyroid, R - Pituitary, S - Contracts uterus during parturition.
4. P - Glucagon, Q - Thymus, R - Ovary, S - Stimulates thyroid gland.

Q.

A heterocrine gland is one which

1. Has two distinct parts

2. Serve a double function of exocrine and endocrine gland

3. Produce two types of hormones

4. Occurs in two places

Q.

Glands without ducts are called

1. endocrine glands

2. exocrine glands

3. sebaceous glands

4. salivary glands

Q.

Endocrine glands

1. Do not possess ducts

2. Sometime have duct

3. Always have duct

4. Pour their secretion through ducts

Q.

Complete the following table by filling in the blank space (i) to (viii).

Gland	Substance produced	One important function
Islets of Langerhans	(i)_________________	(ii)________________
(iii)______________	Adrenaline	(iv)________________
(v)________________	Thyroxine	(vi)________________
(vii)_______________	LH	(viii)_______________

Q.

What is the peripheral nervous system? Mention its two types. (4 Mark)

Q.

State one difference between the endocrine and exocrine gland.

Q.

________________glands are ductless glands.

Q.

Endocrine glands pour their secretions into the ducts.

1. True
2. False

Q. The genetic deficiency of ADH receptor leads to

1. Diabetes mellitus
2. Glycosuria
3. Diabetes insipidus
4. None of the above

Q. Match the following glands with the hormones that they secrete.

1. Thyroxine
2. Growth hormone
3. Testosterone
4. Oestrogen

Q. Tubular secretion helps in urine formation due to

1. The presence of more aldosterone
2. Lack of aldosterone
3. Less intake of water
4. Stones in the kidney

Q. Select the mismatched pair.

1. Adrenaline - Pituitary gland
2. Testosterone - Testes
3. Estrogen - Ovary
4. Thyroxine -Thyroid gland

Q. Endocrine glands are glands.

1. ducted
2. ductless
3. non-vascular

Q. Endocrine system secrete hormones directly into the blood.

1. True
2. False

Q. The endocrine system sends messages in the form of electrical impulses.

1. False
2. True

Q. Food in our mouth is broken down into small pieces by our ________.

1. teeth
2. tongue
3. lips
4. saliva

Q. Identify the endocrine glands

1. Testis
2. Parathyroid
3. Liver
4. Pancreas
5. Spleen
6. Brain
7. Hypothalamus
8. Thymus

Q. Which of the following statements is false for Angiotensin.
i. It is a steroid hormone.
ii. Angiotensinogen is converted to angiotensin I by renin
iii. Angiotensin II decreases the release of aldosterone.
iv. Angiotensin II brings about vasoconstriction.
v. It stimulates $N{a}^{+}$ reabsorption from the Proximal convoluted tubule.

1. i, ii and iii
2. i and iii
3. iii, iv and v
4. i, iii and v