Notes

(26.) What is homeostasis?
Your body uses methods to maintain your body temperature

(27.) What are the main tissue types and give examples of each?
Epilethal: skin, Connective: Blood, Muscular: Heart, Nervous: Nerves.

(28.) Skin is what type of tissue?
Epilethal

(29.) What two organ systems help you move?
Muscular and Skeletal

(30.) What is the skeletal system made up of?
Bones

(31.) What are the four main jobs of the bones of your skeleton?
Support your body, protect your internal organs, provide scaffolding for your muscles, to store minerals and make blood cells

(32.) What are the joints? What are ligaments?
Parts of the body where two bones meet and ligaments hold bones of multiple joints together

(33.) What are the different joint types?
Give examples of body parts where they can be found?
Pivot joint, neck
Gliding joint, wrist
Hinge joint, knee
Ball and Socket joint, hips

(34.) What are the three types of muscle?
Skeletal, Smooth, and Cardiac

(35.) What do tendons do?
Attach skeletal muscle to bones

(36.) What is the difference between voluntary and involuntary muscles?
Give examples of each?
Voluntary - you control, e.g. skeletal muscles
Involuntary - controlled by your body, e.g. heart beating

(37.) What is the job of the digestive system?
To break down food into usable substances for the body

(38.) What are the two kinds of digestion?
Mechanical and chemical digestion

(39.) What is mechanical digestion and what is chemical digestion?
Mechanical digestion- breaks food into smaller pieces like a blender
Chemical digestion- uses enzymes to break up food like an incinerator

(40.) Name the organs in the digestive system and describe their roles?
Mouth- Grinds food into manageable pieces
Epiglottis- prevents food from entering your lungs
Esophagus- carries food to the stomach
Liver- produces bile (stored in the gall bladder) which is released into the small intestine to break down fat molecules
Pancreas- Enzymes made here are released into the small intestine where it breaks down carbs and protein
Stomach- Grind food into smaller pieces and large protein molecules are broken down by hydrochloric acid
Small Intestine- Digested food is absorbed by villi which absorb and distributes nutrients
Large Intestine- indigestible materials move to the large intestine where the water is sucked out and the remaining solid is disposed of in the form of fecal waste
Rectum and Anus- Feces exit the large intestine through the rectum and leave the body through the anus

(41.) The urinary system contains what body parts?
What is the function of the following:- Kidneys, Ureters, Urinary Bladder, Urethra

(42.) What are nephrons?
filters in the kidney that absorb waste in the blood and filters out in the form of urine

(43.) What is the main job of the respiratory system?
Getting oxygen in and Carbon Dioxide out

(44.) What is the path taken by air from your nostrils to your lungs?
Nasal passages to the trachea and finally to the bronchi of your lungs

(45.) What are alveoli? Your lungs contain about how many alveoli?
(700,000,000) Tiny air sacs in the lung that oxygen moves through

(46.) What is the diaphragm and what purpose does it serve?
A large muscle that makes you inhale and exhale

(47.) What is the difference between breathing and respiration in Biology?
Breathing- Taking air in and taking the air out
Respiration- a chemical process involving using oxygen to get energy from food