Excretory, Respiratory, Lymphatic system Flashcards
(46 cards)
What’s the 2 roles of the Respiratory system?
- Supply oxygen to body (So it can be used in cellular respiration)
- To remove waste (CO2) that is toxic to the human body
What is cellular respiration?
The process when the body converts oxygen and sugars into energy in the form of ATP
What’s the purpose and function of nasal cavities?
Air goes through one of the two chambers in the nose lined with cilia and hair, they fixture dust particles (Nasal cavities are lined with mucus to moisten air)
What is the pharynx?
The tube where air will travel through
What are the 8 stops of the respiratory system. (In order)
- Nasal Cavity’s
- Pharynx
- Larynx
- Trachea
- Bronchi
- Lungs
- Bronchioles
- Alveoli
What is the larynx?
It connects the pharynx to the trachea. The larynx has vocal cords that vibrate when we exhale
What’s the Trachea?
It’s made of cartilage rings that give it strength. The trachea has mucus that traps dust and Cilia inside trachea then pouches dust towards the top of the respiratory tract to protect the lungs
What’s the Bronchi?
The Trachea splits into 2 bronchi , the tubes are also made of cartilage rings and have cilia and mucus to remove dust from air
What are the lungs?
They have bronchioles and alveoli. The right lung has 3 lobes vs the left has 2 lobes
What are bronchioles?
The bronchi into smaller bronchioles and at the end of each bronchioles is many alveoli. The function of Bronchioles is to move air to alveoli
What are alveoli?
Thin and permeable which allows for gas exchange. The oxygen inhaled air cross easily across the membrane of alveoli. Oxygen reaches the capillaries and then the circulatory system. CO2 passes in the other direction
What is gas exchange?
Oxygen moves from the lungs to the bloodstream. At the same time carbon dioxide passes from the blood to the lungs.
What is inhalation?
-intercostal muscles contract and lift the ribs and sternum.
-diagram moves down towards the abdomen
-increasing volume of rib cage and lungs.
-Lungs expand
-less pressure is in the lungs
What is Exhalation?
-Air leaves the lungs
-muscles contract
-diaphragm relaxes
-Sternum and ribs move down
-diaphragm moves up
-decrease in volume of rib cage
-lungs pressure increases
-air is released
Inhalation info
Movement of air molecules from area of high concentration(outside the body) to low concentration (in lungs) This is how air enters the lungs and alveoli
Asthma
A reaction of respiratory system to substances present in the air. The sub irritate the bronchi (dust, smoke, pollen , gas). When you have an attack the bronchi contract and narrow, they then they swell and produce mucus, this makes it hard to breathe
What is interstitial fluid
Fluid in your cells. Nutrients absorbed from the digestive system gases exchanged from the respiratory system.
What are the parts of extracellular fluid?
- White blood cells
- Water
- Other sub from blood plasma
What is Cell Waste
Waste products are expelled from cells that go into extracellular fluid. The lymphatic system returns waste to blood and transports them to organs to get rid of them through the body
What is the Lymph
the interstitial fluid is collected by lymphatic vessels so that fluid can be returned to circulatory system
When they collect the lymphatic vessels the fluid (made up of water) is called the lymph
What is the lymphatic system and its function?
Carries lymph through a network of vessels, organs and lymph nodes
-Returns fluid to circuitry system
-Evacuates cell waste
-Carries antibody’s to neutralize antigens
-Transports molecules such as fats
What are Subclavian veins
Moves oxygen-poor blood from your upper body back to your heart.
What are lymphatic nodes and organs?
Dispersed along vessels (Durning infection these nodes with swollen or harden) They are filled with white blood cells that filter the lymph and protect body against viruses
-Thymus
-Spleen
-Bone Marrow
-Tonsils
What is the immune system and its function?
It’s protects the body against antigens
