Flashcards in Test 2, ch 5,6,7 Deck (33)
What are the components of the circulatory system?
The heart, Blood vessels, Blood
What do blood vessels consist of?
arteries, veins, and capillaries.
What does blood consist of?
Plasma, red blood cells, white blood cells and platelets.
What side of the heart carries oxygenated blood?
What side of the heart carries deoxygenated blood?
What are the components of oxygenated blood?
- Blood travels to the body cells
- High oxygen content
- Low in carbon dioxide
What are the components of deoxygenated blood?
- Blood travels away from the body cells.
- Low oxygen content
- High carbon dioxide content.
Are oxygenated blood and deoxygenated blood aloud to mix?
What is the function of the blood?
Transports nutrients, hormones, wastes and gases.
What is the function of the heart?
The heart acts as a pump. Forcing blood around the body.
What is the function of the blood vessels?
Deliver blood to the tissues and from the tissues, then back to the heart.
Where does cardiac muscle occur?
ONLY occurs in the heart!
Are cells of the cardiac muscle voluntary or involuntary.
The cells are involuntary.
What is conductive tissue?
The heart contains its own specialised nerve tissue which regulates the heartbeat.
What are the components of double circulation?
- The systemic circulation
- The pulmonary circulation
What are the three layers that arteries and veins have?
- Tunica externa
- Tunica media
- Tunica interna
What are arteries?
- Muscular blood vessels
- Carry blood away from the heart to the tissues and organs of the body.
Description of a artery?
- thick walled
- relatively small lumen
- well developed tunica media
What are veins?
Veins are blood vessels that carry blood towards the heart.
Description of veins?
- Thin walled
- Relatively large lumen
- Well developed tunica extern, but a relatively thin tunica media.
Why are veins lined with valves?
Veins are lined with valves that ensure that blood flows in one direction only.
What are capillaries?
Capillaries are microscopic blood vessels that connect arteries and veins.
What is gas exchange?
Removal of carbon dioxide and diffusion of oxygen within the blood of the lungs (alveoli & alveolus)
Parts of the heart?
- Superior vena cava
- Pulmonary artery
- Right atrium
- Semilunar valave
- Tricuspid valve
- Inferior vena cava
- Right ventricle
- Pulmonary vein
- Left atrium
- Bicuspid valve
- Left ventricle
Parts of the respiratory system?
- Nasal cavity
- Oral cavity
Parts of the digestive system?
- Oral cavity
- Salivary glands
- Ascending colon
- Descending colon
- Sigmoid colon
- Small intestine
Two types of digestion?
- Mechanical digestion
- Chemical digestion
What are red blood cells?
Red blood cells contain haemoglobin and transport oxygen around the body.
What are white blood cells?
White blood cells help fight infections. (engulf bacteria and kill it)