Respiratory System
What is the primary function of the respiratory system?
The primary function of the respiratory system is to facilitate gas exchange, specifically taking in oxygen and releasing carbon dioxide.
What is the cardiac cycle, and what are its two main phases?
The cardiac cycle is the sequence of events that takes place from one heartbeat to the next, encompassing both contraction (systole) and relaxation (diastole) of the heart chambers.
Who is the universal blood donor?
Type O-
Where are the Hair Cells located in your Ears?
The Cochlea.
State the 2 functions of Cerumen (Earwax).
Earwax provides a trap for foreign bodies & repels insects.
Name three key organs of the respiratory system.
Three key organs of the respiratory system are the lungs, trachea (windpipe), and bronchi.
What happens during atrial systole, and how does it relate to ventricular filling?
During atrial systole, the atria contract, pushing blood into the ventricles. This phase contributes to ventricular filling, especially after the atrioventricular valves (AV valves) open.
what happens when Rh-positive blood is given to an Rh-negative person?
Hemolysis
What is the function of the Round Window?
The round window acts as a pressure release valve, allowing fluid within the Cochlea to move by vibrating in the opposite phase to the vibrations entering through the Oval Window.
How does Hyperopia occur?
Occurs when parallel light rays from distant objects are focused behind the Retina.
What is the role of the alveoli in the respiratory process?
The alveoli are tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide between the air and the blood takes place.
What is isovolumetric contraction, and why is it called that
Isovolumetric contraction is the phase where the ventricles contract, but the volume of blood in the ventricles remains constant because the AV and semilunar valves are closed.
What is the difference between o+ and o-
The difference is O+ has the Rh factor, while O- lacks it.
Identify the function of the Stapes.
Stapes presses on Oval Window of the Inner Ear, setting the fluids in the Cochlea of inner ear into motion, eventually exciting hearing receptors.
What causes Astigmatism?
Blurry images occur because points of light are not focused on the Retina.
What is the diaphragm, and what role does it play in breathing?
The diaphragm is a muscle located below the lungs that contracts and relaxes to help with breathing. It helps to draw air into the lungs during inhalation and pushes air out during exhalation.
What is the significance of the first heart sound (S1), and when does it occur?
The first heart sound (S1) is caused by the closure of the AV valves at the beginning of ventricular systole, marking the onset of ventricular contraction.
What type of blood can an A- person receive?
A-, O-
What is the Tympanic Cavity?
Small, air-filled mucosa-lined cavity w/in Temporal Bone.
Where is the location in the Eye where Light Energy is transformed into Electrical Impulses?
The Retina.
What are some common respiratory diseases?
Some common respiratory diseases include asthma, bronchitis, emphysema, and pneumonia.
What happens during ventricular diastole, and what are the key events that occur?
Ventricular diastole is the phase where the ventricles relax and fill with blood. Key events include the opening of the AV valves, passive filling of the ventricles, and the closure of the semilunar valves at the end of ventricular systole.
what happens when an Rh-positive woman becomes pregnant with an Rh-negative baby?
Nothing
State the anatomy (structure) and physiology (function) of the Eustachian Tube (ET).
Anat: ET obliquely (diagonally) and slightly downward
Phys: Links the Middle Ear to the Throat
Radially arranged smooth muscle fibers that regulate amount of light entering Eye are called
The ciliary muscles.