respiratory and circulatory systems. circulatory system pgs 933-939 moves fluid throughout the body
TRANSCRIPT
![Page 1: RESPIRATORY AND CIRCULATORY SYSTEMS. CIRCULATORY SYSTEM pgs 933-939 Moves fluid throughout the body](https://reader034.vdocuments.net/reader034/viewer/2022051820/56649ea95503460f94badccb/html5/thumbnails/1.jpg)
RESPIRATORY AND CIRCULATORY
SYSTEMS
![Page 2: RESPIRATORY AND CIRCULATORY SYSTEMS. CIRCULATORY SYSTEM pgs 933-939 Moves fluid throughout the body](https://reader034.vdocuments.net/reader034/viewer/2022051820/56649ea95503460f94badccb/html5/thumbnails/2.jpg)
CIRCULATORY SYSTEM pgs 933-939
• Moves fluid throughout the body
![Page 3: RESPIRATORY AND CIRCULATORY SYSTEMS. CIRCULATORY SYSTEM pgs 933-939 Moves fluid throughout the body](https://reader034.vdocuments.net/reader034/viewer/2022051820/56649ea95503460f94badccb/html5/thumbnails/3.jpg)
STRUCTURES• Heart – muscular organ that pumps blood to all
parts of the body.
![Page 4: RESPIRATORY AND CIRCULATORY SYSTEMS. CIRCULATORY SYSTEM pgs 933-939 Moves fluid throughout the body](https://reader034.vdocuments.net/reader034/viewer/2022051820/56649ea95503460f94badccb/html5/thumbnails/4.jpg)
• Vessels: smooth muscle surrounded by connective tissue
a. arteries – carries blood from the heart
b. veins –carries blood to the heart
c. capillaries –narrow blood vessels that pass
blood (cells) in single file.
![Page 5: RESPIRATORY AND CIRCULATORY SYSTEMS. CIRCULATORY SYSTEM pgs 933-939 Moves fluid throughout the body](https://reader034.vdocuments.net/reader034/viewer/2022051820/56649ea95503460f94badccb/html5/thumbnails/5.jpg)
![Page 6: RESPIRATORY AND CIRCULATORY SYSTEMS. CIRCULATORY SYSTEM pgs 933-939 Moves fluid throughout the body](https://reader034.vdocuments.net/reader034/viewer/2022051820/56649ea95503460f94badccb/html5/thumbnails/6.jpg)
MOVEMENT OF BLOOD
• right side: (deoxygenated) blood from body to heart to lungs
• left side: (oxygenated) blood from lungs to the heart to body.
![Page 7: RESPIRATORY AND CIRCULATORY SYSTEMS. CIRCULATORY SYSTEM pgs 933-939 Moves fluid throughout the body](https://reader034.vdocuments.net/reader034/viewer/2022051820/56649ea95503460f94badccb/html5/thumbnails/7.jpg)
RESPIRATORYpgs 946-950
![Page 8: RESPIRATORY AND CIRCULATORY SYSTEMS. CIRCULATORY SYSTEM pgs 933-939 Moves fluid throughout the body](https://reader034.vdocuments.net/reader034/viewer/2022051820/56649ea95503460f94badccb/html5/thumbnails/8.jpg)
EXTERNAL FUNCTION
• exchange of gases between atmosphere and blood
![Page 9: RESPIRATORY AND CIRCULATORY SYSTEMS. CIRCULATORY SYSTEM pgs 933-939 Moves fluid throughout the body](https://reader034.vdocuments.net/reader034/viewer/2022051820/56649ea95503460f94badccb/html5/thumbnails/9.jpg)
MECHANISM
• Large skeletal muscle (diaphragm) contracts pulling lungs down causing them to fill with air
![Page 10: RESPIRATORY AND CIRCULATORY SYSTEMS. CIRCULATORY SYSTEM pgs 933-939 Moves fluid throughout the body](https://reader034.vdocuments.net/reader034/viewer/2022051820/56649ea95503460f94badccb/html5/thumbnails/10.jpg)
INTERNAL FUNCTION
• exchange of gases between blood and cells
• Gases diffuse across due to concentration gradients
lungs (alveoli) capillaries (carrying blood)
![Page 11: RESPIRATORY AND CIRCULATORY SYSTEMS. CIRCULATORY SYSTEM pgs 933-939 Moves fluid throughout the body](https://reader034.vdocuments.net/reader034/viewer/2022051820/56649ea95503460f94badccb/html5/thumbnails/11.jpg)
Figure 42.UN02
Exhaled air
Alveolarepithelialcells
Pulmonaryarteries
Systemicveins
Heart
CO2 O2
Body tissue
Systemiccapillaries
Systemicarteries
Pulmonaryveins
Alveolarcapillaries
Alveolarspaces
Inhaled air
CO2 O2
![Page 12: RESPIRATORY AND CIRCULATORY SYSTEMS. CIRCULATORY SYSTEM pgs 933-939 Moves fluid throughout the body](https://reader034.vdocuments.net/reader034/viewer/2022051820/56649ea95503460f94badccb/html5/thumbnails/12.jpg)
Homeostasis:Blood pH of about 7.4
CO2 level
decreases. Stimulus:Rising level ofCO2 in tissues
lowers blood pH.Response:Rib musclesand diaphragmincrease rateand depth ofventilation.
Carotidarteries
AortaSensor/control center:Cerebrospinal fluid
Medullaoblongata
Figure 42.29
![Page 13: RESPIRATORY AND CIRCULATORY SYSTEMS. CIRCULATORY SYSTEM pgs 933-939 Moves fluid throughout the body](https://reader034.vdocuments.net/reader034/viewer/2022051820/56649ea95503460f94badccb/html5/thumbnails/13.jpg)
HOMEOSTASIS
• Breathing control centers are in the brain• The rate and depth of breathing in response to pH
changes (O2 and CO2 concentrations)