Eyes and Endocrine Abigail Pratt Period 4 (Major Structures + Functions of…
Eyes and Endocrine Abigail Pratt Period 4
Major Functions of the Endocrine System
Made up of glands that produce and secrete hormones, (chemical substances produced in the body) that regulate the activity of cells or organs. These hormones regulate the body's growth, metabolism, along with sexual development and function.
Major Structures + Functions of Eye
Tough outer layer of eye
Clear, protective (and sensitive) layer covering pupil
Hole in eye, light enters through. Size controlled by iris
Dilates pupil to control how much light make it into the eye
Focuses light on the retina, changes shape based on light and distance
Helps adjust shape and tension of lens
Cilary Zonule / Suspensory Ligaments
Help adjust shape and tension of lens
Not found in humans, reflective layer that aids in night vision
Contains nutrients, helps get rid of waste
Transmits information from eye to brain
Helps keep shape of eye, contains nutrients
Between cornea and pupil, helps keep shape of eye
Shock protection for eye
Processes information, contains rods and cones (dim-light/peripheral and color/light)
Functions of hormones
Fight-or-flight response, stimulated by stress/danger
SLEEP NOW, HUMAN. IT IS DARK.
Raises blood sugar levels
Lowers blood sugar levels
Stimulates normal growth patterns
Insulin deficiency causes large amounts of blood glucose to be lost in the urine
Build-up of aqueous humor
Cloudy vision caused by thickening of the lens, can be congenital
Marked by intense thirst and huge urine output
Hypersecretion of GH
Hyposecretion of GH
Inappropriate lactation, lack of menses, infertility in females and impotency in males
Low metabolic rate; feeling chilled; constipation; thick, dry skin and puffy eyes; edema; lethargy; and mental sluggishness. Goiters can be a side-effect.
Autoimmune condition, abnormal antibodies mimic TSH and stimulate TH release instead of inhibiting it
Parathyroid gland tumor. Calcium leeches from bones.
Hypertension and edema, accelerated secretion of potassium ions.
Elevated blood glucose levels, hypertension, etc
Masculinization. Fine in adult males, not so great for everyone else.
Produces symptoms of uncontrolled sympathetic nervous system activity
Major Glands/Organs + Functions
Stimulates normal development and secretory activity of the thyroid gland
Promotes release of glucocorticoids and androgens
Triggers ovulation, production of estrogen and progesterones in women. Promotes testosterone production in men.
Stimulates kidney tubule cells to reabsorb water from forming urine back into blood
Stimulates uterine contractions, initiates labor. Initiates milk ejection.
promotes normal functions of bodily systems
Has a bone-sparing effect
Controls calcium balance in blood
Mobilizes fats for energy metabolism; stimulates protein catabloism; assists body to resist stressors; depresses inflammatory and immune responses
Epinephrine / Norepinephrine
Raises blood sugar levels
Male development hormone
Female development hormone
Promotes natural functions