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Questions and Answers
What is the primary function of plasma in the blood?
What is the primary function of plasma in the blood?
- Remove foreign matter from the body
- Clot blood at injury sites
- Transport oxygen to the tissues
- Prevent fluid from leaking into tissues (correct)
Red blood cells help transport carbon dioxide away from the body's tissues.
Red blood cells help transport carbon dioxide away from the body's tissues.
True (A)
What part of the circulatory system carries oxygenated blood away from the heart?
What part of the circulatory system carries oxygenated blood away from the heart?
Arteries
The primary function of __________ is to seek out and remove bacteria and viruses.
The primary function of __________ is to seek out and remove bacteria and viruses.
Match the following blood components to their primary functions:
Match the following blood components to their primary functions:
Which type of blood vessel returns blood to the heart?
Which type of blood vessel returns blood to the heart?
Capillaries allow for the exchange of oxygen and nutrients with organs and muscles.
Capillaries allow for the exchange of oxygen and nutrients with organs and muscles.
What is the main protein found in plasma, and what is its primary role?
What is the main protein found in plasma, and what is its primary role?
What is the correct order of blood flow starting from oxygen-poor blood entering the heart?
What is the correct order of blood flow starting from oxygen-poor blood entering the heart?
The diaphragm contracts and expands during exhalation.
The diaphragm contracts and expands during exhalation.
What is the major organ responsible for gas exchange in the body?
What is the major organ responsible for gas exchange in the body?
The ______ is a hollow tube that allows air to pass from the pharynx to the lungs.
The ______ is a hollow tube that allows air to pass from the pharynx to the lungs.
Match the respiratory system components with their functions:
Match the respiratory system components with their functions:
Which component protects the lungs and heart?
Which component protects the lungs and heart?
Gas exchange in the lungs is referred to as internal respiration.
Gas exchange in the lungs is referred to as internal respiration.
What is the function of the aorta in the circulatory system?
What is the function of the aorta in the circulatory system?
Flashcards
Blood
Blood
The fluid that circulates throughout the body, carrying essential substances.
Red blood cells
Red blood cells
The primary components of blood, responsible for transporting oxygen.
White blood cells
White blood cells
Blood cells that defend the body against infections and foreign invaders.
Platelets
Platelets
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Arteries
Arteries
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Veins
Veins
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Capillaries
Capillaries
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Albumin
Albumin
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Blood Entry into the Heart
Blood Entry into the Heart
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Tricuspid Valve Function
Tricuspid Valve Function
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Pulmonary Artery's Role
Pulmonary Artery's Role
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Oxygenated Blood Return
Oxygenated Blood Return
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Bicuspid Valve Function
Bicuspid Valve Function
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Aorta's Role
Aorta's Role
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External Respiration
External Respiration
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Internal Respiration
Internal Respiration
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Study Notes
Circulatory System
- The circulatory system transports nutrients, hormones, oxygen and other gases to organs, muscles and tissues for energy, growth and repair.
- Blood is the medium for transporting these resources throughout the body. It is contained within blood vessels and pumped by the heart. Blood is distributed throughout the body, linking every system.
- Vessels are the structures through which blood moves.
- The heart acts as a pump, moving blood throughout the body.
Blood Composition
- Plasma: Comprises 90% water, containing blood cells, clotting factors, sugars, fats, vitamins, minerals, hormones, enzymes, antibodies, and other proteins.
- Albumin is a key protein preventing fluid leakage into tissues.
- Red blood cells: Transport oxygen using hemoglobin and carry away carbon dioxide from tissues.
- White blood cells: Seek out and remove bacteria, viruses, fungi, and other foreign matter.
- Platelets: Clot blood when skin is damaged, aiding in healing and preventing further blood loss, releasing clotting chemicals.
Blood Vessels
- Arteries: Carry oxygenated blood away from the heart. They are thick and elastic to withstand pressure.
- Veins: Return blood to the heart. They are less thick and elastic, with lower blood pressure and slower flow.
- Capillaries: Allow for the exchange of oxygen and nutrients from blood to muscles and organs, and allow blood to pick up waste products and carbon dioxide from metabolism.
Respiratory System
- The respiratory system takes in oxygen and expels carbon dioxide.
- Gas exchange involves two types:
- External respiration: Moving oxygen and carbon dioxide into and out of the body.
- Internal respiration: Moving oxygen and carbon dioxide into and out of cells.
Respiratory System Components
- Nasal passage: Moistens and humidifies inspired air.
- Oral cavity: Allows for inhalation of air.
- Pharynx: Common path for food and air.
- Larynx: Produces sound, contains vocal cords.
- Trachea: Hollow tube for air passage from the pharynx to the lungs.
- Bronchi: Main branches of the trachea.
- Lungs: Major organ of respiration.
- Heart: Major organ of the cardiovascular system; pumps blood to body tissues.
- Ribs: Protect the lungs and heart.
- Diaphragm: Contracts and flattens during inhalation to enlarge the chest cavity, pulling air into the lungs.
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