Please enable JavaScript.
Coggle requires JavaScript to display documents.
Eye and the Endocrine System (Major Structures of the Eye (Sclera; …
Eye and the Endocrine System
Major Structures of the Eye
Sclera;
protects and shapes the eyeball
Cornea;
allows light to enter the eye
Ciliary Body;
controls lens shape
Iris;
regulates amount of light entering the eye
Pupil;
opening through which light passes
Optic Nerve;
transmits visual information from the eye to the brain
Retina;
contains photoreceptors that convert light
Optic Disc;
the blind spot; where the optic nerve leaves the eye
Lens;
allows light to be properly focused
Aqueous Humor
maintains the inner pressure of the eye
Vitreous Humor;
provides major internal reinforcement of the posterior part of the eyes
Tapetum Lucidum;
reflects light within the eye; in animals that live under conditions of low-intensity light
Functions of the Endocrine system
system of glands that secrete hormones causing a chemical chain reaction to influence behavior and emotions
To maintain homeostasis; regulating growth, using food to produce energy, resisting stress, maintaining pH and body fluid balance, regulating reproduction
Endocrine Gland; secretes hormones and exerts specific effects on an organ or tissue
A regulating system
Target Organ; possesses protein receptors for specific hormones and carries out its stimulation
Major Glands
Hypothalamus; main link between the nervous system and the endocrine system & directs the release of hormones by its control of the pituitary gland
Pituitary Gland; known as the master gland, responsible for controlling the body's growth, controls ovulation and the menstrual cycle, signal the ovaries and testes to make sex hormones
Pancreas; keeps the body supplied with fuel to produce and maintain stores of energy
Pineal Gland; secretes melatonin
Adrenal Glands; produces adrenaline and non adrenaline, regulates salt and water balance in the body, involved in metabolism, the immune system, and sexual development and function
Thyroid Gland; affects metabolism, controls how quickly the body uses energy
Parathyroids; regulates lv of calcium in the blood
Diseases
Addison's disease;
insufficient adrenal cortex hormones produced causing weakness, pigmentation of skin, wasting
Cushing's syndrome;
excessive adrenal cortex hormones causing abnormal distribution of hair, fat and shrinking of genitals
Diabetes insipidus
deficiency of pitressin hormone resulting in large amounts of urine being produced
Diabetes mellitus
deficiency of pancreatic hormone, insulin leading to failure to metabolise carbohydrates
Dwarfism;
insufficient growth hormone produced causing lack of growth of long bones in children
Gigantism;
excessive growth hormone in children, causes excessive growth of long bones
Hyperparathyroidism;
excessive production of parathyroid hormone
Hypoparathyroidism;
inadequate secretion of parathyroid hormone