Skeleton and muscles

Question 1

backbone /ˈbækbəʊn/

noun [ C ]

Answer 1

главная опора

The car industry remains the backbone of the area’s economy.

Agriculture forms the backbone of the rural economy.

позвоночник

Question 2

muscle /ˈmʌsl/

noun

Answer 2

мышца, мускул

aching joints and muscles

stomach/thigh muscles

I think I may have pulled (= injured) a muscle.

a calf/neck/thigh muscle

All of this put strain on the heart muscle.

to pull/tear/strain a muscle

He poses and flexes his muscles in the mirror.

This exercise will work the muscles of the lower back.

Contract and relax the muscles in your fingers a few times.
She tried to relax her tense muscles.
He felt every muscle in his body tighten.
He didn’t move a muscle (= stood completely still).
Lift weights to build muscle.
muscle fibre/tissue/mass

Question 3

skull /skʌl/

noun [ C ]

Answer 3

череп

a fractured skull

the angel of death with his grinning skull