Eye
What is the Cornea
Transparent (clear) "window" light enters thru eyes
Most common blood type
Type O
Ventricular cell contract on average ___ bpm
20-40 bpm
Varicose Veins are common in which 2 types of people?
women, especially those who have had multiple pregnancies, and in older individuals
What can damage to AV Node result in?
slow heartbeats, skipped beats, or even fainting
What is the difference between rods and cones?
Rods: Primarily responsible for vision in low light conditions
Cones:Responsible for color vision and daytime vision
What do white blood cells do?
They help defend the body against damage by bacteria, viruses, fungi, parasites and tumor cells
Hear valve allows blood to flow in, in how many directions?
1 direction
Identify 2 characteristics of Sinusitis.
facial pain or pressure, especially around the eyes, cheeks, and forehead, and a stuffy or blocked nose
What happens in Alveoli?
the lungs and the blood exchange oxygen and carbon dioxide during the process of breathing in and breathing out
What direction is convex and Concave?
Convex is curved outward
Concave is curved inward
What does Hypothalamus control?
Controls Pituitary Gland
Which valve prevents blood back flow into left atrium
AV Mitral Valve
What do both Upper Respiratory Tract and lower Respiratory Tract do?
Both URT & LRT purify, humidify, & warm incoming air.
When does a Heart Block occur?
occurs when the electrical signals from the top chambers of your heart don't conduct properly to the bottom chambers of your heart.
T or F
When all 3 cone types are simulated we see red
False
Type A blood genotype
I^A I^A,I^A i
How many times does the heart pump the body's blood supply through the body in 1 day
1,500
What are the common factors of Varicose Veins?
genetics, gender (women are more prone), age, obesity, pregnancy, prolonged standing or sitting, and family history.
Why are Heart Murmurs common in young children and some elderly?
rapid growth, increased blood flow, and potential underlying heart conditions or valve problems
What is refraction?
Speeding of light rays as they pass through different substances
What does hematocrit measure?
Measures % rbc in blood vs entire blood volume
Which valve keeps blood in left and right pulmonary arteries?
Pulmonary semilunar valve
Identify the 7 parts of the Respiratory Tract air passes through during Inspiration
nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles, and finally, the alveoli
How can Ischemia lead to Fibrillation
due to the disruption of the heart's electrical signals and the creation of an unstable electrical substrate