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Practice each question, then open the answer or worked solution.
There are many endocrine glands in the human body. Name the glands which are absent in male and the one absent in the female.
Ovaries are absent in male and testes are absent in female both secrete sex hormones.
Which of the two adrenocortical layers, zona glomerulosa and zona reticularis lies outside enveloping the other?
Zonaglomerulosa is the outermost layer which envelops the other layers. The middle layer is Zona fasciculate and innermost layer is Zonareticularis.
What is erythropoiesis? Which hormone stimulates it?
Formation of RBCs is called Erythropoiesis. Erythropoietin hormone stimulates for erythropoiesis.
Name the only hormone secreted by pars intermedia of the pituitary gland.
Pars intermedia secrete only one hormone called melanocyte-stimulating hormone (MSH).
Name the endocrine gland that produces calcitonin and mention the role played by this hormone.
The thyroid gland is an endocrine gland which produces calcitonin hormone which is a peptide hormone. This hormone decreases the concentration of calcium ions in the plasma.
Name the hormone that helps in cell-mediated immunity.
Thymosin is the hormone that helps in cell-mediated immunity. It helps in maturation of T- cells and differentiation of T-cells.
What is the role of the second messenger in the mechanism of protein hormone action?
cAMP acts as an intercellular hormone which is a secondary messenger those deliver the information as intracellular to the target cells.
State whether true or false:
a. The gastrointestinal tract, kidney and heart also produce hormones.
b. Pars distalis produces six trophic hormones.
c. B-lymphocytes provide cell-mediated immunity.
d. Insulin resistance results in a disease called diabetes mellitus.
a. True
b. True
c. False because T. lymphocytes provide cell-mediated immunity and B- lymphocytes provide humoral immunity which is a type of adaptive immune system.
d. True
A patient complains of constant thirst, excessive passing of urine and low blood pressure. When the doctor checked the patients’ blood glucose and blood insulin level, the level was normal or slightly low. The doctor diagnosed the condition as diabetes insipid us. But he decided to measure one more hormone in patients blood. Which hormone does the doctor intend to measure?
Solution;
Doctor intends to measure vasopressin hormone because this hormone increases the reabsorption of water by the kidney and deficiency of this hormone decreases reabsorption of water
Solution coming soon.
Correct the following statements by replacing the term underlined.
a. Insulin is a steroid hormone.
b. TSH is secreted from the corpus luteum
c. Tetraiodothyronine is an emergency hormone.
d. The pineal gland is located on the anterior part of the kidney.
(a) Insulin is a protein hormone
(b) TSH is secreted from the anterior pituitary.
(c) Adrenaline is an emergency hormone.
(d) The adrenal gland is located on the anterior part of the kidney.