MSH is secreted by:
- Anterior lobe of pituitary
- Middle lobe of pituitary
- Posterior lobe of pituitary
- Endostyle
The Correct Option is B
Solution and Explanation
The pituitary gland consists of distinct sections, each responsible for producing specific hormones:
- The middle lobe, known as the pars intermedia, releases melanocyte-stimulating hormone (MSH), which influences skin pigmentation by acting on melanin-containing cells.
- The anterior lobe of the pituitary gland produces a range of hormones, including prolactin, growth hormone, FSH, LH, TSH, and ACTH.
- The posterior lobe of the pituitary gland secretes oxytocin and vasopressin.
- The pineal gland, a separate structure, produces melatonin, a hormone that plays a role in regulating sleep-wake cycles.
So, the correct option is (B): Middle lobe of pituitary
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Concepts Used:
Chemical Coordination and Integration
The chemical coordination and integration of all physiological functions in the animal body are jointly synchronized by the neural and endocrine systems. The control and coordination of body functions are executed by the endocrine glands. They are ductless glands that secrete severel hormones to control and coordinate body functions.
Human Endocrine System:
The human body has several endocrine glands located in different parts. They cover the pituitary gland, thymus, thyroid gland, pineal gland, parathyroid, pancreas (dual gland), adrenal gland, and gonads (testes and ovaries). The liver, kidney, heart, and gastrointestinal tract also produce hormones in small traces to harmonize the functioning of these organs.
The Hypothalamus comprises groups of secretory cells called nuclei which secrets various hormones. These hormones released by the hypothalamus are important in regulating the synthesis and secretion of pituitary hormones.
Functions of Endocrine Glands:
- Pituitary Gland
- Pineal Gland
- Thyroid Gland
- Parathyroid Gland
- Thymus
- Adrenal Gland
- Pancreas
- Testes
- Ovary
- Hormones of Kidney, Heart, and Gastrointestinal Tract
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