MCQ
Both $RBCs$ and $WBCs$ are formed in
- ACartilage
- BThyroid
- ✓Bone marrow
- DPlasma
✓
Answer
Correct option: C.
Bone marrow
c
In long bones, cavity called bone marrow cavity is present. This cavity is filled with soft and semi solid fatty tissue termed as bone marrow. The bone marrow in some bones is site of production of blood cells (such as $RBCs$, $WBCs$, Platelets etc).
In long bones, cavity called bone marrow cavity is present. This cavity is filled with soft and semi solid fatty tissue termed as bone marrow. The bone marrow in some bones is site of production of blood cells (such as $RBCs$, $WBCs$, Platelets etc).
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(i) The secretions of endocrine glands are called hormones.
(ii) Hormones are non-nutrient chemicals which act as intracellular messengers and are produced in trace amount.
(iii) The hypothalamic hormones are called gonadotrophin releasing hormone (GnRH) which stimulates the pituitary to synthesis and release gonadotrophins.
(iv) Somatostatin hormone from the hyphothalamus stimulates the release of growth hormone from pituitary.
(v) The pituitary gland is located in a bony cavity called Sella tursica and is attached to hypothalamus by a stalk.
(vi) Neurohyphosis part of pituitary consists of two portion, pars distalis and pars intermedia.
(vii) Pars intermedia, portion of pituitary secretes only one hormone called melanocyte stimulating hormone.
(viii) The posterior part of pituitary gland is pars nervosa, which is also called neurohypophysis.
(ix) Neurohypophysis of pituitary synthesise and releases two hormones oxytocin and vasopressin.
(x) Low-secretion of GH by pituitary leads to gigantism and over-secretion to pituitary dwarfism.
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