Hormones
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Hormones. Martina Tycová, Tereza Mlatečková. What are hormones?. from Greek word „horman“ = drive activity organic substances biocatalyzer are secreted by plants and animals carry out communication between organs, tissues and cells are first messenger. carry out - uskutečnit.

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Hormones

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Hormones

Hormones

Martina Tycová, Tereza Mlatečková


What are hormones

What are hormones?

  • from Greek word „horman“ = drive activity

  • organic substances

  • biocatalyzer

  • are secreted by plants and animals

  • carry out communication between organs, tissues and cells

  • are first messenger

carry out - uskutečnit


Hormones create endocrine gland

Hormones create endocrine gland.

gland – žláza create - tvořit


Pituitary

Pituitary

  • a major edocrine gland in vertebrates

  • consists of two parts:

    anterior pituitary (adenohypophysis)

    posterior pituitary (neurohypophysis)

  • the anterior pituitary is called the „master gland“, because it secretes several hormones → affects the other endocrine glands

  • products hormon somatotropin = growth hormon

    vasopresin = has effect bloodpressure

    oxytocin = causes the uterus to contract during birth

anterior – přední posterior - zadní


Thyroid gland

Thyroid gland

  • main hormons of thyroid contain 3-4 atoms of iodine in molecule

  • 90% iodine in body go through thyroid gland

  • hormons of thyroid influence proteosynthesis

  • thyroxin regulates the rate of metabolism

  • trijodthyronin (T3)+thyrosin = stimulate synthesis

    mRNR and proteins, support differentiation of cells

  • calcitonin – declines concentration of calcium in a blood

    In parathyroid is one important hormon parathormon, which operates metabolism of calcium and phosphate. His deficiency provoke convulsions. Total deficiency implicate death.

decline – snižovat provoke – vyvolávat convulsions – křeče implicate - způsobovat


Adrenals

Adrenals

Hormons from the adrenal cortex regulate glucose and a metabolism.

  • are important in helping an individual cope with stress

  • adrenalin – seperate out into the blood at stress → implicate increasing concentration of glucose

  • noradrenalin – increase blood preassure


Pancreas

Pancreas

  • Synthesises 2 important peptid hormons – insulin

    and glucagon

    Insulin

  • supports production and storing of lipids and carbohydrates, increases synthesis of protein, makes possible entry glucose to tissues, absence of insulin implicate disease diabetes

    Glukagon

  • Supports degradation of store substances, has an oppossite effect than insulin

Storing -zásobní


Sex hormons

Sex hormons

  • Secrete steroids hormons

    Female

  • Estrogens – support growth of sexual organs, evolution of secondary sexual signs, implicate excluding sodium and water in our body, decrease level of cholesterol in blood

  • Progesterons – prepare sexual organs for gravidity

    Male

  • Testosterons - support growth of sexual organs, evolution of secondary sexual signs, are necessary for ageing sperm

Secrete – vylučovat excluding - zadržovat

Evolution – vývoj ageing - zrání


Thank you for your attention

Thank you for your attention.


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