Biology Questions and Answers
Hormones are effectors of the endocrine
system.
- What are target organs of
the hormones?
Target organs, target tissues ancells are those specific organs, tissuesd target
and cells upon which each hormone acts
and produces itsselectively act up effects. Hormoneson their targets due to (^)
specific receptor proteins present in
these targets.
- How does the circulatory
system participate in the
functioning of the endocrine
system?
The circulatory system is fundamental
for the functioninsystem. The blood collectsg of the endocrine the
hormones made by the endocrine
glands ahormones reach thnd through the circulationeir targets. Without these
the circulatory system the 'action at
distance' characteristicsystem would not be possible. of the endocrine
- Are hormones only
proteins?
Some hormones are proteins, likeinsulin, glucagon and ADH, others are (^)
derived from proteins (modified aminoacids), like adrenaline and
noradrenaline, other are steroithe corticosteroids and estrogen.ds, like
- What are the main
endocrine glands of the
human body?
The main ehuman body are the pineal gland (orndocrine glands of the (^)
pineal body), thpituitary), the thyre hypophysis (oroid, the parathyroids, (^)
the endocrine part of the pancreas, the
adrenals and the gonads (testiclesovaries). or
Other organs like the kidneys, thand the placenta also have endocrinee heart
functions.
- What is the pineal gland?
The pineal glabody or epiphysis,nd, also known as pineal is situated centrally
in the head. It secretes the hormone
melatonin, a and related to the regulation hormone produced at nightof the
circadian rhythm (or circadian cycle, the
wakefulness-sleep cycle).possibly regulates many body functions Melatonin (^)
related to the night-day alternation.
- What is the osseous cavity
where the pituitary gland is
located?
The pituitary gland, or hypophysis, is
located in the sella turcica of thesphenoid bone (one of the bones in the (^)
base of the skull). So the gland is
situated within the head.
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