NEET PG Medical – 2019 – Question – 102
1st affected in rigor mortis
a) Eyelids
b) Myocardium
c) Jaw
d) Neck
Show Answer
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.
