Respiratory, Skeletal, And Muscular System Flashcards
The ____ system works with the ____ system to add oxygen to the blood and remove carbon dioxide from the body
Respiratory, circulatory
Larynx
Voice box, located at back of mouth, closes when liquids or solids are swallowed, preventing food from entering lungs
Only ____ can pass through ____ and into lungs?
Air, larynx
Choking is a ____ action of the ____ that occurs when liquids or solids accidentally enter the ____
Reflexive, larynx, larynx
Larynx also contain?
Vocal chords
After inhaled are passes through larynx, it enters the?
Trachea
Trachea is also called?
Windpipe
The trachea ____ air into two large tubes called ____
Channels, bronchi
Bronchial tubes carry air to the _____ and to the ____
Lungs, alveoli
Alveoli
Tiny air sacs through which oxygen and carbon dioxide pass in and out of bloodstream
____ passes out of body by exhalation?
Carbon dioxide
Exhalation occurs when?
The diaphragm relaxes, causing the lungs to contract
Only _____ of the air exhaled is replaced by fresh air
One tenth
If you were to completely remove air in lungs?
They would collapse
What prevents lungs from collapsing?
Mixture of fresh and stale air is maintained in the lungs
Amount of ____ in the exhaled air is approximately ___ times the amount in ___ air
Carbon dioxide, 100, inhaled
As air passes through the nose it is?
Warmed and cleaned
Main organ of the respiratory system?
Lungs
Skeletal system consist of how many bones?
206
Bones are joined together by?
Ligaments and tendons
Purpose of skeletal system?
Provide body with a framework that is strong and mobile. Also main supplier of blood cells and minerals
____ are actually living organs
Bones
Axial skeleton
Skull, spine, ribs, and sternum
Provides protection for main organs-brain, heart, lungs, and spinal cord
Appendicular skeleton
All the bones in shoulders, arms, hands, pelvis, legs, and feet
Movement is accomplished when?
The skeletal system works in tandem with the muscular system
Bones move when?
Pulled upon by surrounding muscles
The muscular system is composed of approximately?
600 skeletal muscles
Skeletal muscles are controlled?
Voluntarily
Types of involuntary muscles?
Smooth, cardiac
Muscles that are found on the inside and outside of organs?
Smooth muscles
Cardiac muscles contract rhythmically over?
100,000 times a day
Skeletal and smooth muscles move when?
Nerves impulses sent from the CNS stimulate the muscle fibers, telling them to contact or relax
Muscles controlled voluntarily?
Skeletal
