Week 20-21
What are cones used for?
Allow us to see details of our world in color under bright light conditions
Which Color Blindness type is most common?
Red-Green
Contrast Secrete vs Excrete.
excretion is the removal of waste from the body, whereas secretion is the movement of materials within the body
What is the major function of the Cardiovascular System?
to transport oxygen, nutrients, and hormones to the body's tissues and organs
Why is the SA Node known as the “Pacemaker?”
The sinus node continuously generates electrical impulses, setting a healthy heart's normal rhythm and rate.
What is Mocula?
Area in center of Retina w/cones that processes what you see directly in front of you.
Contrast Total and Partial Color Blindness.
Total color blindness (monochromacy) is much less common than partial color blindness.
What %Formed Elements are:
a). Erythrocytes
b). Thrombocytes
c). Leukocytes
a) 99% b) less than 1% c) less than 1%
What are 3 layers of the heart wall?
Epicardium, Myocardium and Endocardium
What can damage to AV Node result in?
Damage to the AV node can result in atrioventricular block, leading to a slower heartbeat
Blue cone, responds to?
To blue light
Why are many people with Color Blindness unaware of their condition?
Many people with color vision deficiencies are unaware of their condition because the symptoms can be mild
Why is it important to measure a patient’s: Hematocrit and Buffy coat
Measuring a patient's hematocrit and examining the buffy coat are important for assessing blood health, identifying potential anemia
What does the Myocardium consist of and what is its function?
consists of cardiac muscle tissue (cardiomyocytes) and its primary function is to contract and relax, pumping blood throughout the body.
What is the only way depolarization waves can reach the Ventricles?
The only way depolarization waves can reach the ventricles is through the atrioventricular (AV) node
Red cone, responds to?
To range including both red and green light.
Why does Color Blindness occur almost exclusively in males?
because the genes responsible for it are located on the X chromosome, and males only have one X chromosome.
contrast Hormones and Metabolism.
Hormones are chemical messengers that regulate bodily functions, while metabolism is the body's process of converting food into energy
Where do the Pulmonary Arteries bring blood?
The pulmonary artery carries deoxygenated blood from the heart's right ventricle to the lungs
Contrast Tachycardia and Bradycardia.
Tachycardia is a heart rate above 100 beats per minute, while bradycardia is a heart rate below 60 beats per minute
What are rods?
Photo-receptors allow us to see in gray tones in dim light and provide peripheral vision.
Identify the 3 areas the Ear is divided into.
Outer ear, Middle ear and Inner ear
What is the structure and function of Hemoglobin?
Why do we have Heart Valves?
to ensure blood flows efficiently and in the correct direction through the heart's chambers and to the rest of the bod
What is Atrial Flutter?
Atrial flutter is a type of abnormal heart rhythm