The hormone called 'fight-flight hormone' is [B] Adrenaline. Adrenaline, also known as epinephrine, is produced by the adrenal glands in response to stress or danger. It prepares the body for the "fight or flight" response by increasing heart rate, dilating air passages, and redirecting blood flow tRead more
The hormone called ‘fight-flight hormone’ is [B] Adrenaline. Adrenaline, also known as epinephrine, is produced by the adrenal glands in response to stress or danger. It prepares the body for the “fight or flight” response by increasing heart rate, dilating air passages, and redirecting blood flow to essential organs like the muscles and brain. Adrenaline also triggers the release of stored glucose and fatty acids into the bloodstream to provide immediate energy for physical exertion.
This hormone plays a crucial role in survival, enabling rapid physiological changes to cope with threatening situations.
While adrenaline is essential for short-term stress responses, chronic activation can have detrimental effects on health. However, its acute effects are vital for increasing alertness and physical performance during emergencies or challenging situations, allowing individuals to react quickly and effectively to perceived threats. Thus, adrenaline is often referred to as the ‘fight-flight hormone’ due to its role in preparing the body for action in response to stressors.
The gland that disappears in old age is [D] Thymus. The thymus gland, a crucial part of the immune system, gradually diminishes in size and function as individuals age. Situated in the upper chest behind the sternum, the thymus is most active during childhood and adolescence, where it plays a pivotaRead more
The gland that disappears in old age is [D] Thymus. The thymus gland, a crucial part of the immune system, gradually diminishes in size and function as individuals age. Situated in the upper chest behind the sternum, the thymus is most active during childhood and adolescence, where it plays a pivotal role in the development and maturation of T lymphocytes, a type of white blood cell involved in immune responses.
However, as individuals reach adulthood, the thymus undergoes involution, a process in which it progressively decreases in size and becomes replaced by adipose (fat) tissue. By old age, the thymus is typically reduced to a small, fibrous remnant. This decline in thymus function contributes to age-related changes in immune response and susceptibility to certain infections and diseases. Therefore, the disappearance of the thymus gland is a characteristic feature of aging.
The hormone that contains iodine is [A] Thyroxine. Thyroxine, also known as T4, is a thyroid hormone produced by the thyroid gland. It plays a vital role in regulating metabolism, growth, and development throughout the body. Thyroxine molecules consist of four iodine atoms, making iodine an essentiaRead more
The hormone that contains iodine is [A] Thyroxine. Thyroxine, also known as T4, is a thyroid hormone produced by the thyroid gland. It plays a vital role in regulating metabolism, growth, and development throughout the body. Thyroxine molecules consist of four iodine atoms, making iodine an essential component of its structure.
Iodine is crucial for the synthesis of thyroid hormones. The thyroid gland actively absorbs iodine from the bloodstream and incorporates it into thyroxine molecules through a series of enzymatic reactions. Without sufficient iodine intake, the thyroid gland cannot produce an adequate amount of thyroxine, leading to hypothyroidism and associated symptoms such as fatigue, weight gain, and impaired metabolism.
Therefore, iodine is essential for the synthesis of thyroxine, highlighting the importance of dietary iodine intake for maintaining proper thyroid function and overall health.
Estrogen is secreted by [D] Graafian vesicles. These vesicles, also known as ovarian follicles, are fluid-filled sacs within the ovary where oocytes (immature eggs) develop. As the follicle matures, it secretes increasing amounts of estrogen, primarily estradiol, under the influence of follicle-stimRead more
Estrogen is secreted by [D] Graafian vesicles. These vesicles, also known as ovarian follicles, are fluid-filled sacs within the ovary where oocytes (immature eggs) develop. As the follicle matures, it secretes increasing amounts of estrogen, primarily estradiol, under the influence of follicle-stimulating hormone (FSH) from the pituitary gland.
Once the follicle reaches maturity, it ruptures, releasing the mature egg into the fallopian tube in a process called ovulation. After ovulation, the remaining follicle transforms into the corpus luteum, a temporary endocrine structure. While the corpus luteum primarily secretes progesterone to support the uterine lining for potential pregnancy, it also produces estrogen.
However, the main source of estrogen throughout the menstrual cycle, particularly during the follicular phase, is the Graafian vesicles. Estrogen produced by these follicles plays a crucial role in regulating the menstrual cycle, promoting the growth and development of the uterine lining, and influencing secondary sexual characteristics in females.
The female sex hormone is [A] Estrogen. Estrogen encompasses a group of hormones, including estradiol, estrone, and estriol, which are primarily produced by the ovaries. Estrogen plays a fundamental role in the development and functioning of the female reproductive system. Estrogen is responsible foRead more
The female sex hormone is [A] Estrogen. Estrogen encompasses a group of hormones, including estradiol, estrone, and estriol, which are primarily produced by the ovaries. Estrogen plays a fundamental role in the development and functioning of the female reproductive system.
Estrogen is responsible for the development of female secondary sexual characteristics during puberty, such as breast development and widening of the hips. It also regulates the menstrual cycle, promoting the growth and maturation of the uterine lining (endometrium) in preparation for potential pregnancy.
Additionally, estrogen influences various physiological processes beyond reproduction, including bone density maintenance, cardiovascular health, and cognitive function. It plays a crucial role in overall health and well-being throughout a woman’s life.
While androgens [B] are typically associated with male sex hormones, auxin [C] is a plant hormone involved in growth and development, and insulin [D] regulates blood sugar levels, estrogen [A] is specifically categorized as a female sex hormone due to its primary roles in female reproductive physiology.
Which hormone is called fight-flight hormone?
The hormone called 'fight-flight hormone' is [B] Adrenaline. Adrenaline, also known as epinephrine, is produced by the adrenal glands in response to stress or danger. It prepares the body for the "fight or flight" response by increasing heart rate, dilating air passages, and redirecting blood flow tRead more
The hormone called ‘fight-flight hormone’ is [B] Adrenaline. Adrenaline, also known as epinephrine, is produced by the adrenal glands in response to stress or danger. It prepares the body for the “fight or flight” response by increasing heart rate, dilating air passages, and redirecting blood flow to essential organs like the muscles and brain. Adrenaline also triggers the release of stored glucose and fatty acids into the bloodstream to provide immediate energy for physical exertion.
This hormone plays a crucial role in survival, enabling rapid physiological changes to cope with threatening situations.
While adrenaline is essential for short-term stress responses, chronic activation can have detrimental effects on health. However, its acute effects are vital for increasing alertness and physical performance during emergencies or challenging situations, allowing individuals to react quickly and effectively to perceived threats. Thus, adrenaline is often referred to as the ‘fight-flight hormone’ due to its role in preparing the body for action in response to stressors.
See lessWhich of the following glands disappears in old age?
The gland that disappears in old age is [D] Thymus. The thymus gland, a crucial part of the immune system, gradually diminishes in size and function as individuals age. Situated in the upper chest behind the sternum, the thymus is most active during childhood and adolescence, where it plays a pivotaRead more
The gland that disappears in old age is [D] Thymus. The thymus gland, a crucial part of the immune system, gradually diminishes in size and function as individuals age. Situated in the upper chest behind the sternum, the thymus is most active during childhood and adolescence, where it plays a pivotal role in the development and maturation of T lymphocytes, a type of white blood cell involved in immune responses.
However, as individuals reach adulthood, the thymus undergoes involution, a process in which it progressively decreases in size and becomes replaced by adipose (fat) tissue. By old age, the thymus is typically reduced to a small, fibrous remnant. This decline in thymus function contributes to age-related changes in immune response and susceptibility to certain infections and diseases. Therefore, the disappearance of the thymus gland is a characteristic feature of aging.
See lessWhich of the following hormones contains iodine?
The hormone that contains iodine is [A] Thyroxine. Thyroxine, also known as T4, is a thyroid hormone produced by the thyroid gland. It plays a vital role in regulating metabolism, growth, and development throughout the body. Thyroxine molecules consist of four iodine atoms, making iodine an essentiaRead more
The hormone that contains iodine is [A] Thyroxine. Thyroxine, also known as T4, is a thyroid hormone produced by the thyroid gland. It plays a vital role in regulating metabolism, growth, and development throughout the body. Thyroxine molecules consist of four iodine atoms, making iodine an essential component of its structure.
Iodine is crucial for the synthesis of thyroid hormones. The thyroid gland actively absorbs iodine from the bloodstream and incorporates it into thyroxine molecules through a series of enzymatic reactions. Without sufficient iodine intake, the thyroid gland cannot produce an adequate amount of thyroxine, leading to hypothyroidism and associated symptoms such as fatigue, weight gain, and impaired metabolism.
Therefore, iodine is essential for the synthesis of thyroxine, highlighting the importance of dietary iodine intake for maintaining proper thyroid function and overall health.
See lessEstrogen is secreted by
Estrogen is secreted by [D] Graafian vesicles. These vesicles, also known as ovarian follicles, are fluid-filled sacs within the ovary where oocytes (immature eggs) develop. As the follicle matures, it secretes increasing amounts of estrogen, primarily estradiol, under the influence of follicle-stimRead more
Estrogen is secreted by [D] Graafian vesicles. These vesicles, also known as ovarian follicles, are fluid-filled sacs within the ovary where oocytes (immature eggs) develop. As the follicle matures, it secretes increasing amounts of estrogen, primarily estradiol, under the influence of follicle-stimulating hormone (FSH) from the pituitary gland.
Once the follicle reaches maturity, it ruptures, releasing the mature egg into the fallopian tube in a process called ovulation. After ovulation, the remaining follicle transforms into the corpus luteum, a temporary endocrine structure. While the corpus luteum primarily secretes progesterone to support the uterine lining for potential pregnancy, it also produces estrogen.
However, the main source of estrogen throughout the menstrual cycle, particularly during the follicular phase, is the Graafian vesicles. Estrogen produced by these follicles plays a crucial role in regulating the menstrual cycle, promoting the growth and development of the uterine lining, and influencing secondary sexual characteristics in females.
See lessWhich of the following is a female sex hormone?
The female sex hormone is [A] Estrogen. Estrogen encompasses a group of hormones, including estradiol, estrone, and estriol, which are primarily produced by the ovaries. Estrogen plays a fundamental role in the development and functioning of the female reproductive system. Estrogen is responsible foRead more
The female sex hormone is [A] Estrogen. Estrogen encompasses a group of hormones, including estradiol, estrone, and estriol, which are primarily produced by the ovaries. Estrogen plays a fundamental role in the development and functioning of the female reproductive system.
Estrogen is responsible for the development of female secondary sexual characteristics during puberty, such as breast development and widening of the hips. It also regulates the menstrual cycle, promoting the growth and maturation of the uterine lining (endometrium) in preparation for potential pregnancy.
Additionally, estrogen influences various physiological processes beyond reproduction, including bone density maintenance, cardiovascular health, and cognitive function. It plays a crucial role in overall health and well-being throughout a woman’s life.
See lessWhile androgens [B] are typically associated with male sex hormones, auxin [C] is a plant hormone involved in growth and development, and insulin [D] regulates blood sugar levels, estrogen [A] is specifically categorized as a female sex hormone due to its primary roles in female reproductive physiology.