Scientific Study
Science is defined as....
study of the natural world
carry oxygen and nutrients to all the cells of the body
What is the main function of the respiratory system?
take in oxygen and remove carbon dioxide and waste
what is the main function of the digestive system?
to turn food into nutrients
What comprises the central nervous system?
brain and spinal cord
Biology is defined as
The study of life
What are the upper and lower chambers of the heart called?
atrium and ventricles
The windpipe that is made of ringed cartilage is called
trachea
Explain both the physical and chemical changes of digestion that happen in the mouth?
teeth crush food, saliva moistens it= physical
saliva enzyme amylase breaks down carbs= chemical
What are the 4 lobes of the cerebrum
frontal, parietal, occipital and temporal
Ecology is defined as
The study of the relationship between an organism and its environment
Arteries carry blood____________ the heart. Veins carry blood ______________ the heart
arteries= away veins= to/toward
The alveoli have a large _______________ that equates to the size of a tennis court
surface area
The movement of the digestive tract is called
peristalsis
The chemical message of a neuron is called
neurotransmitter
Scientific Process
What do we call a high heart rate and a low heart rate?
Tachycardia HR>100bmp Bradycardia HR< 50BPM
Why are we told to inhale through the nose?
air is filtered, moistened and heated
The largest and second largest diversity of microbes is located
1. the large intestine/colon
2. the mouth
List 3 functions of the brain stem?
hunger/thirst
body temperature
blood pressure
breathing
What do we call a regular heart rhythm?
Normal sinus rhythm
Explain the movement of the diaphragm on inhale and exhale
Inhale diaphragm contracts flattens and air rushes in, exhale the diaphragm relaxes moves up and air is pushed out the thoracic cavity
Give 2 functions of the liver
production of hormones (glucagon)
filter/cleans the blood (Kupfer cells)
production of bile
stores vitamins and blood
Neurons communicate through what type of process?
electrochemical