1 Respiratory System Human Respiratory System A system to deliver oxygen (O2) to body cells & get rid of carbon dioxide (CO2) as a waste through cellular respiration. Two systems involved: Respiratory & Circulatory Systems. Cellular Respiration Glucose + O2 C02 + H20 + Energy Glucose in cells is broken down to release energy (ATP) when O2 is present. ATP is cell’s energy for cell work! Label diagram… About the About the About the About the Respiratory System Respiratory System Respiratory System Respiratory System Nostrils Openings to the respiratory system at the nose. Nostrils
8
Embed
Respiratory System PPT. - Mrs. Reece's Science Pageslreecescience.weebly.com/.../9/6/2/9/9629996/respiratory_system_pp… · Respiratory System Human Respiratory ... Bronchioles Bronchioles
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
1
Respiratory System
Human Respiratory System
� A system to deliver oxygen (O2) to body
cells & get rid of carbon dioxide (CO2) as a waste through cellular respiration.
� Two systems involved:
Respiratory &
Circulatory Systems.
Cellular Respiration
Glucose + O2 C02 + H20 + Energy
� Glucose in cells is broken down to release energy (ATP) when O2 is
present.
� ATP is cell’s energy for
cell work!
Label diagram…
About the About the About the About the Respiratory SystemRespiratory SystemRespiratory SystemRespiratory System
Nostrils
� Openings to the respiratory system at the
nose.
Nostrils
2
Cilia & Mucus
� Cilia
- sweeps, warms, & traps particles to filter
away from the lungs.
� Mucus
- cells that moisten to trap particles
Nasal Passages (Cavity)
� Cilia lined passages that end (terminate)
at the pharynx; acts like a humidifier.
Nasal
Passage
Pharynx (throat)
� Space at the back
of the oral cavity
where the mouth
and nose meet.
Epiglottis
�Flap of tissue that covers the tracheal opening
to prevent food fromentering the lungs (choking).
Larynx
�Also, called the
voice box
(the site for
vocal cords).
Needed to
create sound.
Larynx
Larynx
3
Trachea: (windpipe)
� A cartilage ringed structure that remains
open so air can travel to the lungs.
Trachea
Bronchi
� Right and Left major
divisions of the trachea;
lined with cilia.Left Bronchus
Right Bronchus
Smaller
Bronchioles
� Smaller subdivisions of the bronchi after
they have entered into the lobes of the lung; not made of cartilage.
Bronchioles
BronchiolesBronchioles
Lung
� Balloon-like structures in the chest that
bring oxygen into the body and expel (release) carbon dioxide from the body.
Alveoli (air sacs)� Small thin air sacs at the end of the
bronchioles surrounded with capillaries to allow for gaseous exchange.
Alveolar
Sac
Alveoli
Capillary
network
4
Respiratory Surface
� A thin, moist surface to help for gas exchange by diffusion.