Tag: nervous and endocrine system in humans

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Multiple choice zoology control and coordination in living organisms hypothalamus nervous and endocrine system in humans coordination in human beings- chemical control

The hormones that initiate ejection of milk, stimulates milk production and growth of ovarian follicles are respectively known as 

  1. PRL, OT and LH

  2. PRL, ADH and FSH

  3. LH, PRL and FSH

  4. PRH, OT and LH

  5. PRH, OT and FSH
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Prolactin-releasing hormone (PRH) activates the anterior pituitary to initiate production and ejection of breast milk through the production of prolactin. Oxytocin along with prolactin hormone stimulates milk production. FSH (follicle stimulating hormone) stimulates the growth of ovarian follicles in the ovary before ovulation.

Thus, the correct answer is option E.

Multiple choice zoology control and coordination in living organisms hypothalamus nervous and endocrine system in humans coordination in human beings- chemical control

Pheromones are secreted by 

  1. Endocrine gland

  2. Exocrine gland

  3. Apocrine gland

  4. Mixed gland
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In humans, pheromones are secreted onto our skin through the apocrine glands (sometimes called as human scent glands). These are similar to eccrine glands but the apocrine glands secrete a more oily substance. The apocrine glands are normally associated with hairy areas, such as armpits and the crotch area, and are also usually accompanied by eccrine glands, which help to disperse the pheromone secretions. Apocrine glands are activated at puberty, along with hair growth in the axillary (armpit) regions and crotch, which increase the surface area for pheromone dispersal. 

Multiple choice zoology control and coordination in living organisms hypothalamus nervous and endocrine system in humans coordination in human beings- chemical control

Prostaglandins affect 

  1. Blood pressure

  2. Defecation

  3. Osmoregulation

  4. Oxygen metabolism
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Most prostaglandins act locally; they are powerful as locally acting vasodilators. Vasodilation occurs when the muscles in the walls of blood vessels relax, so that the vessels dilate. This creates less resistance to blood flow and allows blood flow to increase and hence blood pressure to decrease. 

Multiple choice zoology control and coordination in living organisms hypothalamus nervous and endocrine system in humans coordination in human beings- chemical control

Thyrotropin - releasing factor (TRF) is produced by 

  1. Cerebrum

  2. Optic lobe

  3. Cerebellum

  4. Hypothalamus
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Thyrotropin-releasing hormone (TRH), also called as thyrotropin-releasing factor (TRF), is a tropic, tripeptidal hormone, produced by the hypothalamus, that stimulates the release of TSH (thyroid-stimulating hormone) and prolactin from the anterior pituitary.

Multiple choice biology chemical messages for homeostasis hypothalamus nervous and endocrine system in humans coordination in human beings- chemical control

Hypothalamus does not control

  1. Hunger and satiety

  2. Thermoregulation

  3. Libido

  4. Creative thinking and consciousness

  5. Osmoregulation
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The hypothalamus regulates autonomic and endocrine functions like hunger, temperature, and osmoregulation. Higher cognitive functions like creative thinking and consciousness are primarily associated with the cerebral cortex.