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Sandeep Jha

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  1. Asked: March 30, 2024In: CBSE

    The gland that secretes Oxytocin hormone is

    Sandeep Jha
    Added an answer on April 1, 2024 at 4:42 am

    The gland that secretes Oxytocin hormone is [A] Pituitary. Oxytocin is produced by the hypothalamus and then transported and stored in the posterior pituitary gland. Upon stimulation, oxytocin is released into the bloodstream. It plays vital roles in reproductive functions and social bonding. DuringRead more

    The gland that secretes Oxytocin hormone is [A] Pituitary. Oxytocin is produced by the hypothalamus and then transported and stored in the posterior pituitary gland. Upon stimulation, oxytocin is released into the bloodstream. It plays vital roles in reproductive functions and social bonding. During childbirth, oxytocin stimulates uterine contractions, aiding in labor and delivery. Additionally, it facilitates milk ejection (let-down reflex) during breastfeeding by causing contraction of the myoepithelial cells surrounding mammary gland alveoli.

    Oxytocin also influences social behaviors and emotional bonding, playing a role in maternal-infant attachment, romantic attachment, and trust. While the pineal gland primarily secretes melatonin to regulate sleep-wake cycles, the adrenal gland secretes hormones like cortisol and adrenaline in response to stress. The ovary secretes hormones such as estrogen and progesterone, crucial for reproductive functions and menstrual cycle regulation.

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  2. Asked: March 30, 2024In: CBSE

    Where is growth hormone secreted?

    Sandeep Jha
    Added an answer on April 1, 2024 at 4:42 am

    Growth hormone (GH) is secreted in the [D] Pituitary gland. Specifically, it is synthesized and released by somatotroph cells located in the anterior portion of the pituitary gland, which is situated at the base of the brain. GH secretion is regulated by the hypothalamus through the release of growtRead more

    Growth hormone (GH) is secreted in the [D] Pituitary gland. Specifically, it is synthesized and released by somatotroph cells located in the anterior portion of the pituitary gland, which is situated at the base of the brain. GH secretion is regulated by the hypothalamus through the release of growth hormone-releasing hormone (GHRH) and somatostatin, which stimulate and inhibit GH production, respectively.

    Once released, GH enters the bloodstream and exerts its effects on various tissues throughout the body. Its primary role is to stimulate growth, particularly during childhood and adolescence, by promoting the growth of bones and tissues. Additionally, GH influences metabolism, protein synthesis, and cell growth and repair in adults. Dysfunction in GH secretion or signaling can lead to growth disorders such as dwarfism or gigantism, highlighting the importance of proper regulation of GH secretion from the pituitary gland.

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  3. Asked: March 30, 2024In: CBSE

    Which endocrine hormone stimulates the thyroid gland to secrete thyroxine?

    Sandeep Jha
    Added an answer on April 1, 2024 at 4:42 am

    The endocrine hormone that stimulates the thyroid gland to secrete thyroxine is [A] TSH, or Thyroid Stimulating Hormone. TSH is produced by the anterior pituitary gland in response to signals from the hypothalamus. When thyroid hormone levels in the blood decrease, the hypothalamus releases thyrotroRead more

    The endocrine hormone that stimulates the thyroid gland to secrete thyroxine is [A] TSH, or Thyroid Stimulating Hormone. TSH is produced by the anterior pituitary gland in response to signals from the hypothalamus. When thyroid hormone levels in the blood decrease, the hypothalamus releases thyrotropin-releasing hormone (TRH), which prompts the anterior pituitary to secrete TSH.
    TSH then binds to receptors on cells in the thyroid gland, stimulating the synthesis and secretion of thyroxine (T4) and triiodothyronine (T3), collectively known as thyroid hormones.
    Thyroxine plays a crucial role in regulating metabolism, growth, and development throughout the body.
    In contrast, the other hormones listed—FSH (Follicle Stimulating Hormone), LTH (Lactogenic Hormone, also known as Prolactin), and ACTH (Adrenocorticotropic Hormone)—have different functions. FSH regulates reproductive processes, LTH stimulates milk production in the mammary glands, and ACTH stimulates the adrenal glands to produce cortisol. Thus, TSH specifically targets the thyroid gland to regulate thyroxine secretion.

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  4. Asked: December 27, 2023In: Class 10 Science

    Equal sized bars of aluminium and iron are exposed to the environment as shown below. Which of them is likely to corrode till the level marked by the line FIRST? Justify your answer.

    Sandeep Jha
    Added an answer on December 27, 2023 at 11:19 am

    1. The iron bar will erode till the level set apart by the line first. 2. Iron gets oxidized on openness to air and dampness. The layer of rust framed on a superficial level permits air and dampness to go through and arrive at the metal, making erosion proceed. 3. Aluminum gets oxidized on opennessRead more

    1. The iron bar will erode till the level set apart by the line first.
    2. Iron gets oxidized on openness to air and dampness. The layer of rust framed on a superficial level permits air and dampness to go through and arrive at the metal, making erosion proceed.
    3. Aluminum gets oxidized on openness to air. The layer of oxide framed on a superficial level structures a defensive covering that keeps air from arriving at the metal and consequently forestalls further erosion.

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  5. Asked: December 27, 2023In: Class 10 Science

    A helical coil whose length is greater than its diameter is connected to a battery as shown below. (a) How does the magnetic field at point P compare with the magnetic field at point Q? Justify your answer. (b) State one way in which the strength of the magnetic field inside a current carrying helical coil can be changed?

    Sandeep Jha
    Added an answer on December 27, 2023 at 11:19 am

    (A)The magnetic field at P and Q is the same. Because the magnetic field lines inside the helical coil of wire which behaves like a solenoid is uniform/in the form of parallel straight lines. (B) Increasing/decreasing the number of turn in the coil - increasing/decreasing the current through the coiRead more

    (A)The magnetic field at P and Q is the same. Because the magnetic field lines inside the helical coil of wire which behaves like a solenoid is uniform/in the form of parallel straight lines.

    (B) Increasing/decreasing the number of turn in the coil – increasing/decreasing the current through the coil.

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