Tag: introduction to human endocrine system

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Multiple choice zoology coordination introduction to human endocrine system endocrine system and hormone coordination in human beings- chemical control

Endocrine glands are also called as ................. glands.

  1. Exocrine

  2. Ductless

  3. Ducted

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Endocrine glands are glands of the endocrine system that secrete their products, hormones, directly into the blood rather than through a duct. So, they are called as ductless glands. 

The major glands of the endocrine system include the pineal gland, pituitary gland, pancreas, ovaries, testes, thyroid gland, parathyroid gland, hypothalamus and adrenal glands.

Multiple choice zoology coordination introduction to human endocrine system endocrine system and hormone coordination in human beings- chemical control

Endocrine glands

  1. Do not possess ducts

  2. Sometimes do not have ducts

  3. Pour their secretion into blood through ducts

  4. Always have ducts
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Any of various glands producing hormonal secretions that pass directly into the bloodstream is called endocrine gland. The endocrine glands include the thyroid, parathyroids, anterior and posterior pituitary, pancreas, adrenals, pineal and gonads. They are also called as the ductless glands.

Multiple choice zoology coordination introduction to human endocrine system endocrine system and hormone coordination in human beings- chemical control

When the glandular cells breakdown completely, the gland is known as ______________.

  1. Holocrine gland

  2. Apocrine gland

  3. Merocrine gland

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Answer is option A i.e. "Holocrine gland"
Holocrine gland is one in which the entire secreting cell is destroyed on secretion e.g. sebaceous gland
Apocrine gland are the one that secretes a viscous fluid into a hair follicle e.g. sweat glands.
Merocrine gland discharges acellular components without damage to the secreting cell e.g. sweat glands

Multiple choice zoology coordination introduction to human endocrine system endocrine system and hormone coordination in human beings- chemical control

Hair roots are located in

  1. Dermis

  2. Epidermis

  3. Hypodermis

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Skin has three layers:

  • The epidermis, the outermost layer of skin, provides a waterproof barrier and creates our skin tone. 
  • The second layer of skin is the dermis, located under the epidermis. It contains connective tissue, nerve endings, and hair follicles.
  •  Subcutaneous tissue is the third layer of the skin. Located beneath the dermis and epidermis, it is mostly fat. Hence, Hair roots are located in Dermis.
So, the correct answer is 'Dermis'.

Multiple choice zoology coordination introduction to human endocrine system endocrine system and hormone coordination in human beings- chemical control

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

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

  2. Endocrine Corpus luteum, Hormone- Testosterone, Function/gland Deficiency symptoms- Stimulates spermatogenesis

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

  4. Endocrine-Posterior, Hormone- Growth hormone(GH), Function/gland Deficiency symptoms-Over secretion stimulates abnormal growth
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Thyroxine is secreted by the thyroid gland, and its deficiency due to lack of iodine leads to goitre. The other options contain incorrect pairings of glands, hormones, or functions.