Question

question 1
a defect in the sinoatrial node is most likely to result in a/an:
arrhythmia
cardiomyopathy
endocarditis
myocardial infarction

question 2
the medical term cephalo/dynia means:
hardening of the brain
pain in the head
mental disease
softening of the brain

question 3
the diagnostic term blephar/itis means:
inflammation of the tear duct
softening of the sclera
inflammation of the eyelid
condition of white pupil

Explanation:

• Question 1: The sinoatrial node is the heart's natural pacemaker. A defect in it disrupts the heart's electrical conduction, leading to an irregular heartbeat, which is called arrhythmia. Cardiomyopathy is a disease of the heart muscle, endocarditis is inflammation of the inner lining of the heart, and myocardial infarction is a heart - attack (due to blocked blood supply to the heart muscle).
• Question 2: In medical terminology, "cephalo -" means head and "-dynia" means pain. So "cephalo/dynia" means pain in the head. "Hardening of the brain" would involve a term like "sclero -", "mental disease" is more related to psychiatric terms, and "softening of the brain" would use a term like "malacia".
• Question 3: "Blephar -" refers to the eyelid and "-itis" means inflammation. So "Blephar/itis" means inflammation of the eyelid. "Inflammation of the tear duct" would involve a term like "dacryo -", "softening of the sclera" would use "sclero -" and "malacia", and "condition of white pupil" is related to terms like "leuk -".

Answer:

1. arrhythmia
2. pain in the head
3. inflammation of the eyelid