280292
Some glands produce hormones that stimulate other endocrine glands. Which of the following hormones specifically acts to trigger secretion of hormones by another endocrine gland?
1 thyroxine
2 progesterone
3 adrenocorticotropic hormone (ACTH)
4 antidiuretic hormone (ADH)
Explanation:
(c) ACTH stimulates the release of hormones from the adrenal cortex.
NCERT Page-333 / N-241
Chemical Coordination and Integration
280293
After four months of pregnancy if the ovaries are removed
1 It will cause abortion
2 The foetus will be mentally retarded
3 There will be no effect on foetus
4 The physical development of the foetus will be affected
Explanation:
(c) There will be no effect on foetus because during second trimester of pregnancy the placenta is fully formed. So, removal of ovaries will not affect the foetus because sufficient amount of progesterone is secreted from placenta as this hormone is important for the maintainence of pregnancy.
NCERT Page-338 & 339 / N-246
Chemical Coordination and Integration
280294
Stunted is the symptom of the following disease
1 Cretinism
2 Grave's disease
3 Cushing's syndrome
4 Simmond's disease
Explanation:
(a) Cretilnism is a condition of severely stunted physical and mental growth due to the untreated congenital deficiency of thyroid hormones, usually because of the mental hypothyroidism. Syptoms involves mental retardation delayed or impaired sexual performance, thickened skin, enlarged tongue or a protruding abdomen.
NCERT Page-335 / N-243
Chemical Coordination and Integration
280295
A person has protruding eyes, tachycardia and higher body temperature. He is suffering from
1 Cretinism
2 Hyperthyroidism
3 Myxoedema
4 Acromegaly
Explanation:
(b)
NCERT Page-335 / N-243
Chemical Coordination and Integration
280296
Which of the following statement is correct with respect to hormone and its correct source and function?
1 Oxytocin-posterior pituitary, growth and maintenance of mammary glands.
2 Melatonin-pineal gland, regulates the normal rhythm of sleepwake cycle.
3 Thymosins - corpus-luteum, stimulation of growth and activities of female secondary sex organs.
(b) Oxytocin, a neurohypophysial hormone, is produced by the hypothalamus and stored and secreted by the posterior pituitary gland. It stimulates contractions of the smooth muscle tissue in the wall of the uterus during childbirth. Progesterone is a female hormone produced by the ovaries during release of a mature egg from an ovary (ovulation). Progesterone helps prepare the lining of the uterus (endometrium) to receive the egg if it becomes fertilized by a sperm. If the egg is not fertilized, progesterone levels drop and menstrual bleeding begins. Atrial natriuretic factor is a hormonal substance produced by the right atrium of the heart that stimulates the excretion of sodium and water by the kidneys and helps regulate blood pressure.
280292
Some glands produce hormones that stimulate other endocrine glands. Which of the following hormones specifically acts to trigger secretion of hormones by another endocrine gland?
1 thyroxine
2 progesterone
3 adrenocorticotropic hormone (ACTH)
4 antidiuretic hormone (ADH)
Explanation:
(c) ACTH stimulates the release of hormones from the adrenal cortex.
NCERT Page-333 / N-241
Chemical Coordination and Integration
280293
After four months of pregnancy if the ovaries are removed
1 It will cause abortion
2 The foetus will be mentally retarded
3 There will be no effect on foetus
4 The physical development of the foetus will be affected
Explanation:
(c) There will be no effect on foetus because during second trimester of pregnancy the placenta is fully formed. So, removal of ovaries will not affect the foetus because sufficient amount of progesterone is secreted from placenta as this hormone is important for the maintainence of pregnancy.
NCERT Page-338 & 339 / N-246
Chemical Coordination and Integration
280294
Stunted is the symptom of the following disease
1 Cretinism
2 Grave's disease
3 Cushing's syndrome
4 Simmond's disease
Explanation:
(a) Cretilnism is a condition of severely stunted physical and mental growth due to the untreated congenital deficiency of thyroid hormones, usually because of the mental hypothyroidism. Syptoms involves mental retardation delayed or impaired sexual performance, thickened skin, enlarged tongue or a protruding abdomen.
NCERT Page-335 / N-243
Chemical Coordination and Integration
280295
A person has protruding eyes, tachycardia and higher body temperature. He is suffering from
1 Cretinism
2 Hyperthyroidism
3 Myxoedema
4 Acromegaly
Explanation:
(b)
NCERT Page-335 / N-243
Chemical Coordination and Integration
280296
Which of the following statement is correct with respect to hormone and its correct source and function?
1 Oxytocin-posterior pituitary, growth and maintenance of mammary glands.
2 Melatonin-pineal gland, regulates the normal rhythm of sleepwake cycle.
3 Thymosins - corpus-luteum, stimulation of growth and activities of female secondary sex organs.
(b) Oxytocin, a neurohypophysial hormone, is produced by the hypothalamus and stored and secreted by the posterior pituitary gland. It stimulates contractions of the smooth muscle tissue in the wall of the uterus during childbirth. Progesterone is a female hormone produced by the ovaries during release of a mature egg from an ovary (ovulation). Progesterone helps prepare the lining of the uterus (endometrium) to receive the egg if it becomes fertilized by a sperm. If the egg is not fertilized, progesterone levels drop and menstrual bleeding begins. Atrial natriuretic factor is a hormonal substance produced by the right atrium of the heart that stimulates the excretion of sodium and water by the kidneys and helps regulate blood pressure.
280292
Some glands produce hormones that stimulate other endocrine glands. Which of the following hormones specifically acts to trigger secretion of hormones by another endocrine gland?
1 thyroxine
2 progesterone
3 adrenocorticotropic hormone (ACTH)
4 antidiuretic hormone (ADH)
Explanation:
(c) ACTH stimulates the release of hormones from the adrenal cortex.
NCERT Page-333 / N-241
Chemical Coordination and Integration
280293
After four months of pregnancy if the ovaries are removed
1 It will cause abortion
2 The foetus will be mentally retarded
3 There will be no effect on foetus
4 The physical development of the foetus will be affected
Explanation:
(c) There will be no effect on foetus because during second trimester of pregnancy the placenta is fully formed. So, removal of ovaries will not affect the foetus because sufficient amount of progesterone is secreted from placenta as this hormone is important for the maintainence of pregnancy.
NCERT Page-338 & 339 / N-246
Chemical Coordination and Integration
280294
Stunted is the symptom of the following disease
1 Cretinism
2 Grave's disease
3 Cushing's syndrome
4 Simmond's disease
Explanation:
(a) Cretilnism is a condition of severely stunted physical and mental growth due to the untreated congenital deficiency of thyroid hormones, usually because of the mental hypothyroidism. Syptoms involves mental retardation delayed or impaired sexual performance, thickened skin, enlarged tongue or a protruding abdomen.
NCERT Page-335 / N-243
Chemical Coordination and Integration
280295
A person has protruding eyes, tachycardia and higher body temperature. He is suffering from
1 Cretinism
2 Hyperthyroidism
3 Myxoedema
4 Acromegaly
Explanation:
(b)
NCERT Page-335 / N-243
Chemical Coordination and Integration
280296
Which of the following statement is correct with respect to hormone and its correct source and function?
1 Oxytocin-posterior pituitary, growth and maintenance of mammary glands.
2 Melatonin-pineal gland, regulates the normal rhythm of sleepwake cycle.
3 Thymosins - corpus-luteum, stimulation of growth and activities of female secondary sex organs.
(b) Oxytocin, a neurohypophysial hormone, is produced by the hypothalamus and stored and secreted by the posterior pituitary gland. It stimulates contractions of the smooth muscle tissue in the wall of the uterus during childbirth. Progesterone is a female hormone produced by the ovaries during release of a mature egg from an ovary (ovulation). Progesterone helps prepare the lining of the uterus (endometrium) to receive the egg if it becomes fertilized by a sperm. If the egg is not fertilized, progesterone levels drop and menstrual bleeding begins. Atrial natriuretic factor is a hormonal substance produced by the right atrium of the heart that stimulates the excretion of sodium and water by the kidneys and helps regulate blood pressure.
280292
Some glands produce hormones that stimulate other endocrine glands. Which of the following hormones specifically acts to trigger secretion of hormones by another endocrine gland?
1 thyroxine
2 progesterone
3 adrenocorticotropic hormone (ACTH)
4 antidiuretic hormone (ADH)
Explanation:
(c) ACTH stimulates the release of hormones from the adrenal cortex.
NCERT Page-333 / N-241
Chemical Coordination and Integration
280293
After four months of pregnancy if the ovaries are removed
1 It will cause abortion
2 The foetus will be mentally retarded
3 There will be no effect on foetus
4 The physical development of the foetus will be affected
Explanation:
(c) There will be no effect on foetus because during second trimester of pregnancy the placenta is fully formed. So, removal of ovaries will not affect the foetus because sufficient amount of progesterone is secreted from placenta as this hormone is important for the maintainence of pregnancy.
NCERT Page-338 & 339 / N-246
Chemical Coordination and Integration
280294
Stunted is the symptom of the following disease
1 Cretinism
2 Grave's disease
3 Cushing's syndrome
4 Simmond's disease
Explanation:
(a) Cretilnism is a condition of severely stunted physical and mental growth due to the untreated congenital deficiency of thyroid hormones, usually because of the mental hypothyroidism. Syptoms involves mental retardation delayed or impaired sexual performance, thickened skin, enlarged tongue or a protruding abdomen.
NCERT Page-335 / N-243
Chemical Coordination and Integration
280295
A person has protruding eyes, tachycardia and higher body temperature. He is suffering from
1 Cretinism
2 Hyperthyroidism
3 Myxoedema
4 Acromegaly
Explanation:
(b)
NCERT Page-335 / N-243
Chemical Coordination and Integration
280296
Which of the following statement is correct with respect to hormone and its correct source and function?
1 Oxytocin-posterior pituitary, growth and maintenance of mammary glands.
2 Melatonin-pineal gland, regulates the normal rhythm of sleepwake cycle.
3 Thymosins - corpus-luteum, stimulation of growth and activities of female secondary sex organs.
(b) Oxytocin, a neurohypophysial hormone, is produced by the hypothalamus and stored and secreted by the posterior pituitary gland. It stimulates contractions of the smooth muscle tissue in the wall of the uterus during childbirth. Progesterone is a female hormone produced by the ovaries during release of a mature egg from an ovary (ovulation). Progesterone helps prepare the lining of the uterus (endometrium) to receive the egg if it becomes fertilized by a sperm. If the egg is not fertilized, progesterone levels drop and menstrual bleeding begins. Atrial natriuretic factor is a hormonal substance produced by the right atrium of the heart that stimulates the excretion of sodium and water by the kidneys and helps regulate blood pressure.
280292
Some glands produce hormones that stimulate other endocrine glands. Which of the following hormones specifically acts to trigger secretion of hormones by another endocrine gland?
1 thyroxine
2 progesterone
3 adrenocorticotropic hormone (ACTH)
4 antidiuretic hormone (ADH)
Explanation:
(c) ACTH stimulates the release of hormones from the adrenal cortex.
NCERT Page-333 / N-241
Chemical Coordination and Integration
280293
After four months of pregnancy if the ovaries are removed
1 It will cause abortion
2 The foetus will be mentally retarded
3 There will be no effect on foetus
4 The physical development of the foetus will be affected
Explanation:
(c) There will be no effect on foetus because during second trimester of pregnancy the placenta is fully formed. So, removal of ovaries will not affect the foetus because sufficient amount of progesterone is secreted from placenta as this hormone is important for the maintainence of pregnancy.
NCERT Page-338 & 339 / N-246
Chemical Coordination and Integration
280294
Stunted is the symptom of the following disease
1 Cretinism
2 Grave's disease
3 Cushing's syndrome
4 Simmond's disease
Explanation:
(a) Cretilnism is a condition of severely stunted physical and mental growth due to the untreated congenital deficiency of thyroid hormones, usually because of the mental hypothyroidism. Syptoms involves mental retardation delayed or impaired sexual performance, thickened skin, enlarged tongue or a protruding abdomen.
NCERT Page-335 / N-243
Chemical Coordination and Integration
280295
A person has protruding eyes, tachycardia and higher body temperature. He is suffering from
1 Cretinism
2 Hyperthyroidism
3 Myxoedema
4 Acromegaly
Explanation:
(b)
NCERT Page-335 / N-243
Chemical Coordination and Integration
280296
Which of the following statement is correct with respect to hormone and its correct source and function?
1 Oxytocin-posterior pituitary, growth and maintenance of mammary glands.
2 Melatonin-pineal gland, regulates the normal rhythm of sleepwake cycle.
3 Thymosins - corpus-luteum, stimulation of growth and activities of female secondary sex organs.
(b) Oxytocin, a neurohypophysial hormone, is produced by the hypothalamus and stored and secreted by the posterior pituitary gland. It stimulates contractions of the smooth muscle tissue in the wall of the uterus during childbirth. Progesterone is a female hormone produced by the ovaries during release of a mature egg from an ovary (ovulation). Progesterone helps prepare the lining of the uterus (endometrium) to receive the egg if it becomes fertilized by a sperm. If the egg is not fertilized, progesterone levels drop and menstrual bleeding begins. Atrial natriuretic factor is a hormonal substance produced by the right atrium of the heart that stimulates the excretion of sodium and water by the kidneys and helps regulate blood pressure.
