Self Studies
Self Studies
Self Studies
Self Studies

Chemical Coordination and Integration Test 57

Result Self Studies

Chemical Coordination and Integration Test 57
  • Score

    -

    out of -
  • Rank

    -

    out of -
TIME Taken - -
Self Studies

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Self Studies Self Studies
Weekly Quiz Competition
  • Question 1
    1 / -0
    The two hormones secreted by adrenal glands which regulate the rate of metabolism and the concentration of salts in blood and prepares the body to face the emergency are ........... and ............ which helps in metabolic functions.
    Solution
    The two hormones secreted by adrenal glands which regulate the rate of metabolism and the concentration of salts in blood and prepares the body to face the emergency are cortisone and adrenaline.
    Cortisone is one of the main hormones released by the adrenal gland in response to stress. Cortisone suppresses the immune system, thus reducing inflammation and attendant pain and swelling at the site of the injury. Cortisone and adrenaline are the main hormones released by the body as a reaction to stress. They elevate blood pressure and prepare the body for a fight or flight response. So, the correct answer is option D.
  • Question 2
    1 / -0
    Corticoid hormones are mainly secreted by ________.
    Solution
    Corticoids are a group of steroid hormones. Glucocorticoids and mineralocorticoids are the steroids released by the adrenal glands. Glucocorticoids are involved in carbohydrate, lipid, protein, and purine metabolism. Mineralocorticoids are involved in regulating plasma sodium and potassium concentrations. Testosterone secreted by the testis (male gonad) is a corticoid hormone and responsible for male sexual characteristics. Estrogen and progesterone are secreted by the ovaries (female gonad) and are responsible for female sexual characteristics. The placenta secretes human chorionic gonadotropin that maintains pregnancy. 
    So, the correct option is option D.
  • Question 3
    1 / -0
    Select the answer which correctly matches the endocrine gland with the hormone it secretes and its function/deficiency symptom : 
    Solution
    The corrected form of the given options are:
    A) Endocrine gland- Posterior pituitary, Hormone- Oxytocin, Function/deficiency symptoms- stimulate uterus contraction during childbirth.
    B) Endocrine gland- Anterior pituitary, Hormone- Growth hormone(GH), Function/deficiency symptoms- Oversecretion stimulates abnormal growth(gigantism)
    C)Endocrine gland- Thyroid gland, Hormone- Thyroxine, Function/deficiency symptoms- Lack of iodine in diet results in goitre.
    D)Endocrine gland-Testis, Hormone- Testosterone, Function/deficiency symptoms- stimulate spermatogenesis.
    So, the correct answer is 'Option C)Endocrine gland- Thyroid gland, Hormone- Thyroxine, Function/deficiency symptoms- Lack of iodine in diet results in goitre'.
    So the correct option is C.
  • Question 4
    1 / -0
    Cortex, sympathetic, medulla, steroid, aldosterone, catecholamine, cortisol, adrenocorticotrophic, noradrenaline, adrenaline
    Fill in the blanks with the above words.
    Adrenal glands are paired structures located on the top of kidneys. Each adrenal gland has two parts outer ...... (1) ........ and inner ....... (2) ...... The outer part secretes ...... (3) .........hormones (chemical nature) e.g., ..... (4) ........ and ...... (5) ......... and is controlled by ........ (6) ......... hormone of the pituitary gland. The inner part secretes ....... (7) .......... hormones (chemical nature) eg., ....... (8) .......... and ........ (9) ......... and is controlled by ........ (10) .......... nervous system.
    Solution
    The adrenal gland is present atop the kidney. Each adrenal gland consists of outer portion adrenal cortex (1) and inner portion adrenal medulla (2). The adrenal cortex secretes steroid (3) hormones which are namely Aldosterone (4), cortisol (5) and sex hormones. The adrenal medulla secretes hormones which have modified amino acids i.e., catecholamines (7); for example, epinephrine (8) and norepinephrine (9). Adrenocorticotropic hormone (ACTH) (6) is secreted by anterior pituitary which targets the adrenal cortex to stimulate secretion of corticoids and sex hormones. Secretion and release of hormones by adrenal medulla are regulated by the hypothalamus which sends nerve impulses via brain stem, spinal cord and sympathetic nervous system (10) to adrenal medulla. 
    Therefore, the correct answer is option A.
  • Question 5
    1 / -0
    Glucagon is produced in the islets of Langerhans by
    Solution
    The alpha cells of the islets of Langerhans produce the hormone glucagon, which releases glucose from the liver and fatty acids from fat tissue. 
  • Question 6
    1 / -0
    What effect does the presence of ANF have on the body?
    Solution
    • Cyclic GMP is a cyclic nucleotide, Guanosine 3', 5' cyclic monophosphate or cGMP. It functions as a second messenger in certain cells including those of intestinal linings, heart, blood vessels, brain and the collecting ducts of the kidneys. 
    • The cGMP is produced by guanylate cyclase. In mammals, guanylate cyclase is activated by the binding of the hormone atrial natriuretic factor or ANF, which is released by cells in the atrium of the heart when increased blood volume stretches the atrium. Carried in the blood to the kidney, 
    • ANF activates guanylate cyclase in cells of the collecting ducts, and the resulting rise in cGMP triggers increased renal excretion of sodium and consequently of water.
    • Water loss reduces the blood volume, countering the stimulus that initially led to ANF secretion. Vascular smooth muscles also have an ANF receptor- guanylate cyclase, upon binding to the receptor, ANF causes vessel relaxation (i.e., vasodilation) which reduces the blood pressure.

    So, the correct answer is option B.
  • Question 7
    1 / -0
    Which is the largest endocrine gland?
    Solution
    The thyroid gland is the largest endocrine gland which weighs up to 15-25 grams, 4-6 cm in length and 1.3-1.8 cm in thickness. The thyroid is an important gland that produces T$$_3$$ and T$$_4$$ from iodine and tyrosine. It also produces calcitonin that maintains calcium homoeostasis. 
    Parathyroid weighs about 30 milligrams and is 3-4 millimeter in diameter.
    The adrenal gland is 50 mm in length and 10 mm in thickness.
    The pancreas is about 6 inches long.
    So, the correct answer is option A.
  • Question 8
    1 / -0
    Median eminence is part of
    Solution
    The pituitary gland is composed of adenohypophysis and neurohypophysis. Adenohypophysis consists of anterior lobe (pars distalis), pars tuberalis and intermediate lobe (pars intermedia). Neurohypophysis consists of posterior lobe, median eminence and infundibular stalk.  Thus, the correct answer is C.
  • Question 9
    1 / -0
    If thyroid is removed from tadpole, it will
    Solution
    In amphibian metamorphosis, thyroxine ( $$T_4$$- iodine-containing hormone) produced by the thyroid gland causes apoptosis of the cells of gills, tail, and fins of tadpoles. It plays a major role in the amphibian metamorphosis that transforms the vegetarian aquatic tadpole into a carnivorous terrestrial adult frog, with better neurological, visuospatial, olfactory, and cognitive abilities for hunting, as seen in other predatory animals. Removal of this organ will arrest the development of tadpole.
    Thus the correct answer is option B. 
  • Question 10
    1 / -0
    Parathormone regulates
    Solution
    Parathyroid hormone (PTH), parathormone or parathyrin, is secreted by the chief cells of the parathyroid glands. It acts to increase the concentration of calcium ($$Ca^{2+}$$) in the blood. Parathormone also inhibits the reabsorption of phosphate by the kidney tubules, thereby decreasing serum phosphate concentrations. This potentiates the ability of parathormone to increase serum calcium concentrations because fewer insoluble calcium-phosphate complexes are formed when serum phosphate concentrations are low.
Self Studies
User
Question Analysis

  • Correct -

  • Wrong -

  • Skipped -

My Perfomance
  • Score

    -

    out of -
  • Rank

    -

    out of -
Re-Attempt Weekly Quiz Competition
Selfstudy
Selfstudy
Self Studies Get latest Exam Updates
& Study Material Alerts!
No, Thanks
Self Studies
Click on Allow to receive notifications
Allow Notification
Self Studies
Self Studies Self Studies
To enable notifications follow this 2 steps:
  • First Click on Secure Icon Self Studies
  • Second click on the toggle icon
Allow Notification
Get latest Exam Updates & FREE Study Material Alerts!
Self Studies ×
Open Now