cardiovascular
What does a normal heart beat sound like
Lub Dub
What is the main function of the respiratory system?
To take in oxygen and remove carbon dioxide
Do all animals have red blood?
No, some have blue or green
What is the normal characteristics of a lymph node
Pea to grape size and firm
What animal does not have middle lung lobes?
horse
What kind of blood flows through the heart?
Deoxygenated blood
What is the tube called that carries air to the lungs also known as the windpipe?
trachea
Why take blood from veins instead of arteries?
Veins are closer to the skin and have lower pressure
What is the primary function of the lymph nodes
To act as filtration and processing unit for the immune system
What are clotting factors?
Protiens/chemical normally dissolved in plasma
what does the SA node do?
Generates an electrical current that causes the repeating beat of the heart
What is tidal volume?
The amount of air inhaled and exhaled during normal breathing
What is the function of blood
Transports oxygen and nutrients to cells and removes waste
Why do lymph nodes swell
Nodes enlarge when fighting infections or cancer
What is the difference between plasma and serum?
The presence or absence of clotting factors
What is the pericardial cavity?
Where does gas exchange occur?
The alveoli
What is the structure that forms the outter boundary of red blood cells and maintains their shape after the nucleous is lost?
Plasma membrane
What happens in the nodes as lymph flows through them
Pathogens are filtered and b cells and t cells are activated to fight infection
The larynx is located between which two structures?
Pharynx and trachea
What is the composition of the heart wall?
Epicardium, pericardium, myocardium, endocardium
What are the vestibular folds?
A pair of mucosal folds that close in order to protect the airway during swallowing
Platelets release this substance which contribute to vascular spasms
Serotonin
Which of the following is not a location of superficial lymph nodes commonly palpated?
A. Cervical, B. Axillary, C. Inguinal, D. Intestinal
D. Intestinal (deep)
What are the first two main arteries that branch off the aortic arch?
Brachiocephalic trunk and left subclavian artery