Page 47 - Human anatomy COMPLETELY DONE1
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The adrenal medulla produces the hormone adrenaline. Its secretion increases
dramatically when strong stress stimuli act on the body. Adrenaline increases the
excitability of the nervous system, increases and accelerates heart contractions,
breathing, muscle contractions, stimulates blood circulation, reduces muscle fatigue.
The adrenal glands also produce a number of sex hormones.
The secretion of hormones of the adrenal cortex is regulated by the pituitary
hormone and the nervous system.
The ovaries produce groups of estrogens and progestins.
Estrogens include the hormone estradiol, which is responsible for the maturation
of eggs, during puberty participates in the formation of secondary sexual characteristics
of the female type.
Progestins include progesterone, which inhibits the maturation of new eggs
during pregnancy. Progesterone also prepares the uterus for the introduction of a
fertilized egg, promotes the growth and development of the fetus.
The testes secrete testosterone and other hormones of the androgen group.
Testosterone ensures the constancy of sperm production, during the development of the
body it is necessary for the formation of the male-type reproductive system and the
development of male secondary sexual characteristics.
Check your knowledge
(use the code or tap Ctrl and click to the link)
Answer the question?
1. Name the gland that is located at the base of the throat, just inferior to the laryngeal
prominence?
2. What gland is located just superior to the kidneys?
3. The endocrine gland responsible for the body's circadian rhythm is the?
4. Endocrine glands differ from exocrine glands in that?
5. Function of the hypothalamus?
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