1st affected in rigor mortis
a) Eyelids
b) Myocardium
c) Jaw
d) Neck
Correct Answer - B
Answer-B. Myocardium
state of the muscles in a dead body when they become stiff or rigid
with some degree of shortening.
All muscles of body are involved i.e. voluntary or involuntary.
However, it does not start in all muscles simultaneously (nysten’s
rule).
Involuntary muscles (heart) are involved first than voluntary
muscles.
Sequence of muscles involvement is as follows: Heart> upper
eyelid> neck > jaw>face > chest > upper limb > abdomen > lower
limb > finger and toes.