Curriculum

Ncert -Class 11 - Biology- Unit- 5-HUMAN PHYSIOLOGY

Chapter 14 -Breathing and Exchange of Gases

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Chapter-15-Body Fluids And Circulation

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Chapter-16-Excretory Products And Their Elimination

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Chapter-17-Locomotion And Movement

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Chapter-18-Neural Control And Coordination

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Chapter-19-Chemical Coordination And Integration

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MCQ Pratice Test -Chapter-19-Chemical Coordination And Integration

Instruction

Total Questions : 20

Total time :20 min

Total Marks : 20 x 3 = 60 Marks

Each Correct Question carries : 3 Marks

Each incorrect Question Carries : -1 Marks

Each Unattempted Question carry : 0 Marks

Be careful On Negative Markings

When the blood phosphorus level becomes too high, the result is

The thyroid gland releases calcitonin, which binds to bone cells.

The thyroid gland releases thyroid hormone, which binds to small intestine cells

The pancreas release glucagon, which binds to liver cells

The parathyroid glands release PTH, which binds to bone cells.

None

What effect does the presence of ANF have on the body?

It increases the excretion of sodium and water

It stimulates the production of aldosterone

It stimulates the production of angiotensin

It increases the production of renin

None

Select the correct match of endocrine gland, its hormone and its function.

Leydig cells - androgen - initiates production of sperms

Pancreas - estrogen - initiates secretion of milk

Ovary - FSH - stimulates follicular development and secretion of estrogens

Corpus luteum - estrogen - essential for maintenance of endometrium

None

Which one of the following four glands is correctly matched with the accompanying description?

Thymus - Starts undergoing atrophy after puberty

Pancreas - Delta cells of the islets of Langerhans secrete a hormone which stimulates glycolysis in liver

Parathyroid - Secretes parathormone, which promotes movement of calcium ions from blood into bones during ossification.

Thyroid - Hyperactivity in young children causes cretinism

None

Choose the correct answer from the alternatives given.

Parathyroid hormone (PTH) regulates:

calcium balance between blood and tissues

glucose balance between blood and tissues

regulates sleep

regulates temperature

None

What role is performed by pancreas in order to deal with an increased blood glucose level above normal range?

Releases glucagon, signaling adipose cells to take up glucose

Releases glucagon, signaling muscle cells to take up glucose

Releases insulin, signaling muscle cells to release glucose

Releases insulin, signaling the liver to convert glucose to glycogen

None

Consider the following four statements (a-d) and select the option which includes the correct ones only.

(a) The thyroid hormone play an important role in basal metabolic rate and erythropoisis

(b) Glucocorticoids inhibits inflammatory reactions by suppressing the immune system and promotes erythropoisis

(c ) Androgen promotes development maturation and function of the male sex organ as well as erythropoisis

(d) The gastrointestinal tract not only secretes gastric inhibitory peptide but also promotes formation of RBC.

None

The two hormones secreted by adrenal glands which regulate the rate of metabolism and the concentration of salts in blood and prepares the body to face the emergency are ........... and ............ which helps in metabolic functions.

Insulin and glucagon

Testosterone and estrogen

Cortisone and adrenaline

Cortisone and dopamine

None

Cortex, sympathetic, medulla, steroid, aldosterone, catecholamine, cortisol, adrenocorticotrophic, noradrenaline, adrenaline

Fill in the blanks with the above words.

Adrenal glands are paired structures located on the top of kidneys. Each adrenal gland has two parts outer ...... (1) ........ and inner ....... (2) ...... The outer part secretes ...... (3) .........hormones (chemical nature) e.g., ..... (4) ........ and ...... (5) ......... and is controlled by ........ (6) ......... hormone of the pituitary gland. The inner part secretes ....... (7) .......... hormones (chemical nature) eg., ....... (8) .......... and ........ (9) ......... and is controlled by ........ (10) .......... nervous system.

1. Medulla, 2. Cortex, 3. Steroid, 4. Aldosterone, 5. Cortisol, 6. Adrenocorticotrophic, 7. Catecholamine, 8. Adrenaline, 9. Sympathetic, 10. Noradrenaline

1. Medulla, 2. Cortex, 3. Steroid, 4. Aldosterone, 5. Cortisol, 6. Adrenocorticotrophic, 7. Catecholamine, 8. Adrenaline, 9. Noradrenaline, 10. Sympathetic

1. Cortex, 2. Medulla, 3. Steroid, 4. Aldosterone, 5. Cortisol, 6. Adrenocorticotrophic, 7. Catecholamine, 8. Adrenaline, 9. Noradrenaline, 10. Sympathetic

1. Medulla, 2. Cortex, . Steroid, 4. Cortisol, 5. Aldosterone, 6. Adrenocorticotrophic, 7. Catecholamine, 8. Adrenaline, 9. Noradrenaline, 10. Sympathetic

None

10.

Which of the following statements is false?

Hindbrain contains medulla, pons and cerebellum

Cerebral cortex in humans is folded into convolutions

Thalamus is an important sensory relay structure

Hypothalamus has an important role in recognising and experiencing

None

11.

Arrange the following step in correct sequence found during the mechanism of lipid insoluble hormone (epinephrine) function or action.

A. Second messenger formation

B. Binding to the surface receptor

C. Glycogenolysis

D. Adenylate cyclase activation

C, A, D and B

B, D, A and C

D, B, C and A

None of the above

None

12.

Androgens are produced by

Ovaries and testes

Testes and adrenals

Adrenals only

Adrenals and ovaries

None

13.

Pineal gland of human brain secretes melatonin, which is concerned with

Colouration of skin

Sleep

Anger

Body temperature

None

14.

Select the answer which correctly matches the endocrine gland with the hormone it secretes and its function/deficiency symptom :

Endocrine gland - Anterior pituitary, Hormone - Oxytocin, Function/deficiency symptoms - Stimulates uterus contraction during child birth

Endocrine gland - Thyroid gland, Hormone - Thyroxine, Function/deficiency symptoms - Lack of iodine in diet results in goitre

Endocrine gland - Posterior pituitary, Hormone - Growth Hormone (GH), Function/deficiency symptoms - Oversecretion stimulates abnormal growth

Endocrine gland - Corpus luteum, Hormone - Testosterone, Function/deficiency symptoms - stimulates spermatogenesis

None

15.

............. is the only complete ring of the cartilage around the trachea.

Articular cartilage

Pretracheal fascia

Thyroid cartilage

Cricoid cartilage

None

16.

The low blood sugar level is maintained due to the secretion of hormone by the gland

Adrenal medulla

Parathyroid

Salivery gland

Pancreas

None

17.

The female hormone that causes deposition of fat in the breast, and hips and the growth of pubic hairs during puberty is

Luteinizing hormone

Progesterone

Estrogen

Follicle-stimulating hormone

None

18.

Thyroid hormone increase the rate of breathing, intake and consumption of oxygen, and increase the activity of mitochondria. Under which of the following criteria, the function of thyroxine can be classified?

Developmental

Metabolic

Cardiovascular

All of the above

None

19.

The pineal gland secretes a hormone progesterone which helps to regulate sleep pattern. Thyroid glands release hormone which regulate the level of calcium in the blood with the help of calcitonin which is produced in the parathyroid glands. Select the correct option regarding the given paragraph.

i) Positions of pineal and parathyroid should be interchanged

ii) Progesterone must be replaced by melatonin

iii) Parathyroid should not be replaced as it is correctly mentioned.

iv) Positions of progesterone and calcitonin should be interchanged

v) Positions of thyroid and parathyroid should be interchanged

i, ii and v only

ii and iv only

ii and v only

i and iii only

None

20.

Calcitonin is a thyroid hormone, which ________.

Elevates potassium level in blood

Elevates calcium level in blood

Lowers calcium level in blood

Has no effect on calcium

None

Time's up