hormones n.
Download
Skip this Video
Download Presentation
Hormones

Loading in 2 Seconds...

play fullscreen
1 / 9

Hormones - PowerPoint PPT Presentation


  • 136 Views
  • Uploaded on

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.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Hormones' - hayley


Download Now An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
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