R4RIN – MCQs, Mock Tests | Zoology Zoology MCQS[NEET-2021 to 2022]-ENDOCRINE SYSTEM

This is not a function of insulin

1. decreasing glycogenolysis
2. lipogenesis
3. gluconeogenesis
4. glycogenesis

✅ Correct Answer: 3

Action of parathormone in the human body

1. decreases blood sodium level
2. increases blood sodium level
3. decreases blood calcium level
4. increases blood calcium level

✅ Correct Answer: 4

Effects of hypothyroidism include all but this

1. Diarrhoea
2. lethargy
3. Anorexia
4. Weight gain

✅ Correct Answer: 1

Glucagon

1. accelerates protein synthesis within cells
2. accelerates conversion of glycogen into glucose
3. decreases conversion of glycogen into glucose
4. slows down glucose formation from lactic acid

✅ Correct Answer: 2

Pituitary hormone triggering the male testes to generate sperm and in females, triggering follicular development on a monthly basis is

1. prolactin
2. growth hormone
3. follicle-stimulating hormone
4. luteinizing hormone

✅ Correct Answer: 3

This hormone is responsible for “fight-or-flight” response

1. Thyroxine and melatonin
2. insulin and glucagon
3. epinephrine and norepinephrine
4. oestrogen and progesterone

✅ Correct Answer: 3

Difference between endocrine and exocrine glands is that

1. endocrine glands release hormones, exocrine glands release waste
2. endocrine glands are interconnected, exocrine glands are totally independent
3. endocrine glands are formed by epithelial tissue, exocrine glands are connective tissues primarily
4. endocrine glands are ductless, exocrine glands release secretions into ducts or at the surface of the body

✅ Correct Answer: 4

This hormone is not secreted by Hypothalamus

1. PRH
2. FSH
3. CRH
4. TRH

✅ Correct Answer: 2

This is the most abundant hormone produced by the anterior pituitary

1. LH
2. TSH
3. ACTH
4. GH

✅ Correct Answer: 4

This is not an endocrine gland

1. Adrenal
2. Pituitary
3. Lacrimal
4. Thyroid

✅ Correct Answer: 3

Chemical messengers secreted by ductless glands are called___________

1. Lymph
2. Platelets
3. Plasma
4. Hormones

✅ Correct Answer: 4

Which of the following is NOT an endocrine gland?

1. Hypothalamus
2. Pituitary
3. Parathyroid
4. Pancreas

✅ Correct Answer: 1

Which of this statement is INCORRECT regarding the function of hormones?

1. Reproduction and sexual differentiation
2. Maintenance of internal environment
3. Maintain body temperature
4. Development and growth

✅ Correct Answer: 3

Mark the one, which is NOT the precursor of the hormone?

1. Amino acids
2. Cholesterol
3. Phospholipids
4. Proteins

✅ Correct Answer: 4

What is the precursor of steroid hormone?

1. Protein
2. Cholesterol
3. Carbohydrate
4. Lipid

✅ Correct Answer: 2

Which of the is a fat soluble hormone?

1. Amine hormone
2. Peptide hormone
3. Thyroid hormone
4. Protein hormone

✅ Correct Answer: 3

Name the hormone which is synthesized from histidine amino acid?

1. Histamine
2. Epinephrine
3. Norepinephrine
4. Dopamine

✅ Correct Answer: 1

Which of the following is protein hormone?

1. Oxytocin
2. Insulin
3. TSH
4. Antidiuretic hormone

✅ Correct Answer: 2

Name the gland, which releases Neurohormone.

1. Hypothalamus
2. Pituitary
3. Thyroid
4. Thyroid

✅ Correct Answer: 1

Name the hormone which takes part in the release of FSH and LH from the anterior pituitary.

1. Growth hormone
2. GnRH
3. Somatostatin
4. TRH

✅ Correct Answer: 2

Which of the following is Growth hormone inhibiting hormone?

1. FSH
2. TRH
3. GHRH
4. Somatostatin

✅ Correct Answer: 4

Mark the one, which is not inhibited by the effect of somatostatin.

1. GH
2. TSH
3. Glucagon
4. Dopamine

✅ Correct Answer: 4

Name the hormone, which is released by the posterior pituitary.

1. Oxytocin
2. TSH
3. ICSH
4. Prolactin

✅ Correct Answer: 1

Which of these is true of the endocrine system?

1. secretes hormones that are transported to target cells by blood
2. causes changes in metabolic activities
3. effects are prolonged
4. All of above are true.

✅ Correct Answer: 4

Name the gland that is located at the base of the throat, just inferior to the laryngeal prominence (Adam's apple).

1. Pituitary.
2. Pineal gland.
3. Hypothalamus.
4. Thyroid

✅ Correct Answer: 4

What gland is located just superior to the kidneys?

1. Pituitary.
2. Adrenal.
3. Pancreas.
4. ovaries

✅ Correct Answer: 2

In the pancreas, which are the cells that secrete insulin, decrease the blood levels of glucose.

1. delta.
2. alpha.
3. beta.
4. beta.

✅ Correct Answer: 4

The endocrine gland responsible for the body's circadian rhythm is the:

1. Thymus gland.
2. Pineal gland.
3. Parathyroid gland.
4. Pituitary gland.

✅ Correct Answer: 2

Endocrine glands differ from exocrine glands in that:

1. Endocrine glands are ductless and exocrine glands release secretions at the body's surface or into ducts.
2. Endocrine glands release hormones, whereas exocrine glands release waste.
3. Endocrine glands are formed by epithelial tissue, but exocrine glands are primarily connective tissue.
4. Endocrine glands are all interconnected; whereas exocrine glands act completely independently.

✅ Correct Answer: 1

Which of these is not an endocrine property?

1. hormones reach targets through the blood
2. effects are slow and cyclic
3. rapid acting effects
4. effects caused by chemicals.

✅ Correct Answer: 3

The primary target of the releasing and inhibiting hormones of the hypothalamus is the:

1. Liver and adipose tissue
2. Gonads
3. Anterior pituitary
4. Bone marrow

✅ Correct Answer: 3

Which of these is not an endocrine gland?

1. Pancreas.
2. Testes.
3. Salivary gland.
4. Parathyroid.

✅ Correct Answer: 3

Which is not a function of the hypothalamus?

1. Affect heart rate
2. Control temperature
3. Affect water balance
4. Secrete FSH

✅ Correct Answer: 4

Which if the following gland which can be classified as an endocrine and an exocrine gland?

1. Thyroid.
2. Thymus.
3. Pancreas.
4. Pituitary.

✅ Correct Answer: 3

Which of these hormones is made by the posterior pituitary?

1. FSH
2. LH
3. ACTH
4. ADH

✅ Correct Answer: 4

Which gland controls basal metabolic rate (BMR)?

1. Thyroid.
2. Parathyroid.
3. Testes.
4. Pancreas.

✅ Correct Answer: 1

How do hormones from the thyroid and parathyroid regulate the calcium concentration of the blood?

1. Calcitonin lowers blood calcium; parathyroid hormone raises blood calcium.
2. Parathyroid hormone lowers blood calcium; calcitonin raises blood calcium.
3. Thyroxine and triiodothyronine together regulate calcium levels, as needs dictate.
4. Both parathroid hormone and the three thyroid hormones function to regulate blood calcium levels.

✅ Correct Answer: 1

The posterior pituitary stores and releases:

1. Growth hormone and prolactin.
2. Prolactin and oxytocin.
3. Oxytocin and antidiuretic hormone (ADH).
4. ADH and growth hormone.

✅ Correct Answer: 3

Which of the following hormones are responsible for the "fight-or-flight" response?

1. Epinephrine and norepinephrine.
2. Insulin and glucagon.
3. Esrtogen and progesterone.
4. Thyroxin and melatonin.

✅ Correct Answer: 1

The pituitary hormone that stimulates the male testes to produce sperm and stimulates the development of the follicle in the female on a monthly cycle is:

1. growth hormone
2. luteinizing hormone
3. prolactin
4. follicle-stimulating hormone

✅ Correct Answer: 4

Which hormones of the adrenal glands supplement the sex hormones from the gonads?

1. Mineralocorticoids, such as aldosterone
2. Glucocorticoids, such as cortisol
3. Gnadocorticoids, such as the androgens
4. Epinephrine and norepinephrine.

✅ Correct Answer: 3

The clusters of cells in the pancreas that produce hormones are the:

1. Nodules.
2. Islets of Langerhans.
3. Pancreatic medulla.
4. Pancreatic cortex.

✅ Correct Answer: 2

The Glucagon is:

1. accelerates the conversion of glycogen into glucose.
2. slows down glucose formation from lactic acid.
3. decreases the conversion of glycogen into glucose.
4. speeds up protein synthesis within cells.

✅ Correct Answer: 1

Most hormones of the endocrine system are regulated by a:

1. Negative feedback mechanism.
2. Positive feedback mechanism.
3. Hormone-receptor complex.
4. Hormone-gene complex.

✅ Correct Answer: 2

Calcitonin is a hormone of which of following:

1. Adrenal cortex.
2. Thyroid gland.
3. Pituitary gland.
4. Thymus gland.

✅ Correct Answer: 2

Calcium level in the blood is regulated by the:

1. Thyroid.
2. Parathyroid.
3. Posterior pituitary.
4. Adrenal medulla.

✅ Correct Answer: 4

All of the following are hormones of the anterior pituitary except:

1. Human growth hormone (GH).
2. Follicle-stimulating hormone (FSH).
3. Parathyroid hormone(PTH).
4. Thyroid-stimulating hormone (TSH).

✅ Correct Answer: 3

The secretions from which of these glands differs between males and females?

1. Adrenal.
2. Parathyroid.
3. Gonadal.
4. Pancreas.

✅ Correct Answer: 3