Osteology
How many bones are there in the human body?
206
How many chambers does the heart have?
Four (left atrium, right atrium, left ventricle, right ventricle)
What are the three types of muscles?
Skeletal, smooth, cardiac
Why do we have skin?
Serves as a physical barrier against injury and pathogens
First step when you witness a first aid emergency (cardiac arrest, choking, etc)
Scan the scene to make sure it is safe for you to proceed
Strongest bone in the body?
Femur
What are the three layers of the heart?
Epicardium, Myocardium, endocardium
Strongest muscle in the body?
Masseter (jaw)
What are the three layers of the skin?
epidermis, dermis, hypodermis
How long should you wait before calling 911?
What do the bones do?
Produce blood cells, facilitate movement, and provide support for the body
What is hypertension and why is it known as the silent killer?
above average blood pressure, known as the silent killer because it doesn't have any symptoms but can lead to severe cardiac issues
Which muscles are voluntary and why?
Skeletal: allow us to move around
In which layer of the skin are blood vessels and connective tissues located?
Dermis
Ratio of chest compressions to rescue breaths (when 1 rescuer is present)
30:2
How many pairs of ribs?
12 pairs
What is the apex?
Lower tip of the heart, where you listen for heartbeat
Anterior vs posterior muscles
anterior muscles are in the front, posterior muscles are in the back
What are sebaceous glands?
Glands that release oil (sebum) to lubricate the skin and hair
Ratio of chest compressions to rescue breaths (when 2 rescuers are present)
15:2
Where do all blood cells (red, white, platelets) originate from?
Bone marrow
What does the SA node do?
Pacemaker; initiates and regulates the heart's electrical rhythm
What is plantar flexion?
movement of the ankle joint that points the toes and sole of the foot downward
What are sudoriferous glands?
Sweat glands that secrete sweat to regulate body temperature
Two fingers against the sternum or the thumb circling method