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Science Final Exam

includes vocabulary for 7th grade science final exam

Adrenal Gland Produces ADRENALINE in response to physical or emotional stress (fight or flight)
Heart Major organ of cardiovascular system -cardiac muscle allows it to pump -cardiac muscle is skeletal and doesn't tire easily -four sections: Right and left atrium, and right and left ventricle
Stomach Food undergoes mechanical digestion when stomach muscles churn the food -chemical digestion occurs when HCI and pepin break down proteins
Kidneys Filter blood that has collected wastes from cells -Nephrons: filters in the kidneys
Urinary Bladder Muscular organ that holds urine
Ureters tubes that lead from each kidney to the bladder
Esophagus Smooth muscles force food into the mucus-lined esophagus -peristalsis moves food downward
Small intestine Most digestion occurs here because the small intestine is six meters long Intestinal juices break down food
Large intestine undigested food spends about 18 to 24 hours here, and most of the water is absorbed Materials that are not absorbed then become solid waste 1.5 meters long
Urethra Tube that carries urine from the bladder out of the body
Brain the central organ of the nervous system which is protected by the skull. Coordinates actions
Joint Any place where two or more bones meet
Ligament Tough bans of tissue that hold bones together at the joint
Diaphragm a muscular area that helps the lungs expand and contract
Voluntary Muscle Can be controlled All striated muscles except cardiac muscles are voluntary Skeletal Muscle
Sensory neuron Picks up a stimulus and turns it into a nerve impulse
Recessive trait A trait that can be carried in a person's genes without appearing in that person
Phenotype A trait's observable characteristics
heredity The passing of characteristics from parents to children
Involuntary Muscle Unable to control these cardiac and smooth
genotype the way a trait is expressed in letters
dominant trait an observable trait
Pancreas produces pancreatic juices that are released into the small intestine to break down proteins, starches, and fats Produces insulin which controls sugar levels in the blood
Parathyroid produces parathormone which controls calcium levels
Pituitary gland "Boss Gland" Produces a growth hormone which controls growth and homeostasis
Thyroid Produces thyroxin to regulate metabolism
Testes Produces testosterone used in sperm production and the development of male traits
Ovaries produce estrogen used in egg production and the development of female traits
Created by: mariette.buzad