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THE ENDOCRINE SYSTEM

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THE ENDOCRINE SYSTEM Its Parts and Functions Gland & Hormone Chart Gland Hormone Destination Action 1. Hypothalamus 2. Pituitary Posterior Anterior Oxytocin Skip 3 ... – PowerPoint PPT presentation

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Title: THE ENDOCRINE SYSTEM


1
THE ENDOCRINE SYSTEM
  • Its Parts and Functions

2
Gland Hormone Chart
Gland Hormone Destination Action
1. Hypothalamus
2. Pituitary Posterior Anterior Oxytocin Skip 3-4 lines
3. Thyroid
4. Parathyroid
5. Adrenal Medulla Cortex
6. Gonads Testes Ovaries
7. Pineal
8. Thymus
9. Pancreas Insulin Glucagon
3
  • The NERVOUS SYSTEM controls the body electrically
    via NERVE IMPULSES.
  • The ENDOCRINE SYSTEM regulates the body
    chemically via HORMONES.

4
What is a GLAND?
  • It is an organ that develops a secretion which
    performs specific functions.

5
The Endocrine System
  • Is made up of ductless glands.
  • Ductless means without tubes

6
HORMONES
  • Are chemical messengers formed from substances
    taken from the blood.
  • They circulate throughout the body exert
    specific effects on tissues, organs or other
    glands located some distance away from the cells
    that secrete them.

7
PINEAL POSTERIOR PITUITARY ANTERIOR
PITUITARY THYROID THYMUS ADRENALS PANCREAS OV
ARIES TESTIS (es)
8
Pituitary Gland
  • LOCATION
  • found at the base of the brain
  • DESCRIPTION
  • called the master gland because it controls
    most of the other endocrine glands.

9
The pituitary gland has two lobes The Anterior
and Posterior
10
Hormones Secreted by the Posterior Pituitary
HORMONE TARGET TISSUES Destination FUNCTION Action
Antidiuretic hormone (ADH) Kidney Increases water reabsorption
2. Oxytocin -Uterus -Mammary Gland -Stimulates labor -Initiates milk ejection
11
Hormones Released by the Anterior Pituitary
HORMONE TARGET TISSUES FUNCTION
1. Growth Hormone (GH) Most tissues Stimulates body growth
2. Thyroid- Stimulating Hormone (TSH) Thyroid Gland Stimulates release of T3 and T4
3. Adrenocorticotropic Hormone (ACTH) Adernal Cortex Stimulates secretion of hormones from cortex
4. Luteinizing Hormone (LH) Ovaries/Testis FEMALE -Promotes ovulation hormone production MALE Sperm production
5. Follicle-Stimulating Hormone (FSH) Follicles in ovary Seminiferous Tubules in Testis FEMALE egg production MALE - sperm production
6. Prolactin (PRL) Ovary Mammary Gland in females, testis in males Promotes lactation (low levels in males high levels affect testosteron levels)
12
Thyroid Gland
  • LOCATION at the base of the neck (just below the
    larynx
  • DESCRIPTION soft, brownish-red organ shaped like
    a butterfly.

13
Hormone Destination Action
T3 Triiodothyronine Most tissues Embryonic development body temperature, growth, heartrate
T4 Thyroxine Most tissues Increases metabolism, blood pressure regulates tissue growth
Calcitonin Primarily bone Bone growth
14
Parathyroid Gland
  • LOCATION attached to the back of the thyroid
    gland
  • DESCRIPTION 2 pairs of pea-sized glands

15
Parathyroid
Hormone Destination Action
Parathyroid Hormone (Parathormone) Bone kidney Increases blood calcium bone kidneys intestine
16
Adrenal Glands
  • LOCATION
  • found above the kidneys
  • DESCRIPTION
  • cone-shaped glands

17
Hormome Destination Action
MEDULLA MEDULLA MEDULLA
Epinephrine (aka adrenaline, the emergency hormone) Skeletal muscle Heart Blood vessels Bronchioles Short-term stress response increased BSL, vasoconstriction, increases heart rate, blood diversion
Norepinephrine Skeletal muscle Heart Blood vessels Bronchioles Short-term stress response increased BSL, vasoconstriction, increases heart rate, blood diversion
18
Hormome Destination Action
CORTEX CORTEX CORTEX
Glucocorticoids (Cortisol) Mineralocorticoids Skeletal muscle Heart Blood vessels Kidneys Long-term stress response increased BSL, immune suppression
19
Testes
  • LOCATION
  • near the penis
  • DESCRIPTION
  • pair of glands that functions to produce sperm
    cells.

20
TESTES
Hormome Destination Action
Testosterone Many male tissues organs Secondary Sexual characteristics Body/Facial hair Muscle mass Voice Etc
Testosterone Testes Sperm production
21
Ovaries
  • LOCATION
  • located on one side of the uterus
  • DESCRIPTION
  • pair of glands that functions to produce egg
    cells/ova.

22
OVARIES
Hormome Destination Action
Estrogen Many female tissues organ 1. Secondary Sexual characteristics Breasts Widened hips Armpit/pubic hair 2. Menstrual cycle
Progesterone Uterus Menstrual cycle pregnancy
23
Pineal Gland
  • LOCATION
  • found near the base of the brain
  • DESCRIPTION
  • outgrowth of the brain

24
HORMONE DESTINATION ACTION
Melatonin Brain (hypothalamus) and many tissues / organs Regulates the biological clock, day/night cycle
25
Thymus Gland
  • LOCATION
  • located in the upper part of the chest, below the
    neck
  • DESCRIPTION
  • consists of 2 lobes

26
Hormone Destination Action
Thymosin Immune tissues Promotes immune system development function Development of T lymphocytes

27
Pancreas
  • LOCATION lies behind the stomach
  • DESCRIPTION elongated tapers at one end

28
Hormone Destination Action
Insulin Liver, skeletal muscle, adipose tissue Lowers blood sugar level
glucagon Liver Raises blood sugar level
29
Diagram
  • Your diagram should already be colored labeled
    and in notebook!
  • Next to each gland, use a RED pen to
    identify the hormone(s) released

30
Notebook Assignment
  • Research ONE endocrine disorder. Identify
  • Name of disorder
  • Gland affected
  • Description
  • And
  • Paste a PICTURE into notebook
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