Body Systems pt. 2 Flashcards
What are the 5 systems?
Respiratory, Digestive, Excretory, Nervous, Endocrine
What are the functions of the Respiratory System?
- takes oxygen to CS
- removes carbon dioxide from CS
Mouth & Nose
- passage to bring in oxygen
- nose warms, moistens, and cleans the air
- Uvula
What is the Pharynx?
passageway shared by both air and food
What is the Larynx?
“voice box”
What is the Trachea?
- 5in long tube
- supported by C-shaped rings
What is the Bronchi, bronchioles?
tubes that carry oxygen into the lungs
2 Lungs
- exchange the oxygen and carbon dioxide with blood
- Alveoli - tiny, thin-walled sacs filled with capillaries
What is Breathing?
process of air moving in and out of the lungs
Breathing facts
- 15 to 20 times per min
- The diaphragm contracts and draws air into the lungs
What are the Breathing Disorders?
- Asthma
- Emphysema
- Pneumonia
What is the function of the Digestive System?
take food from outside and transport it to CS
What is Digestion?
changing food from complex into simple
What is the Alimentary canal?
tube from mouth to anus
What is the Mouth?
Oral cavity
Parts of the Mouth?
- Teeth
- Tongue
- Salivary glands
Saliva facts
- moistens food
- begins digestion
What is the Uvula?
back of the mouth, closes the nasal cavity
What is the Esophagus?
tube that carries food to the stomach
What is the Stomach?
J shaped organ
Stomach facts
- holds 2 quarts of food
- mixes food with digestive enzymes - chyme
What are the Small Intestines?
digests food and absorbs it into the blood
Small Intestines facts
- 20 to 25 ft long, 1.5-inch diameter
- walls are lined with small projections called villi, that absorb food particles
Large Intestines/Colon facts
- 5 to 6 ft long, 2.5 in diameter
- removes indigestible material
- reabsorbs water, 7.5 L/day
What is the Rectum?
the end
What is the Liver?
the largest organ in the body
Liver facts
- produces bile, breaks down fats
- removes drugs and poisons from the blood