true or false
1.muscles can't push they have a partner to pul in the same direction
2.a tendon attaches a muscle to bone
3.contraction of a skeletal muscle causes a tendon to pull a bonr
4.when the triceps contract it bends the elbow joint
5.there are more muscles in frowing than in smiling
6.some forms stimui are heat,light chemichal pressure and electricity
7.muscle are seen in all parts of the body
8.contractibility returns muscles to their original form
9.elasticity allow muscle to change their shape and size
Answers
1. muscles can't push they have a partner to pull in the same direction: True.
This is due to internal skeletal structure of humans.
2. a tendon attaches a muscle to bone: True.
Tendons attach muscles to bone structure. A tendon act in moving the bone or structure. A ligament is a fibrous tissue connects and attaches bone to bone, and usually get hold the whole structures together and keep them strong and stable.
3. contraction of a skeletal muscle causes a tendon to pull a bone: True.
Contractions of skeletal muscles produce movements by resulting a pulling action force on tendons, which in turn to pulling action on bones or many other structures, such as skin.
4. when the triceps contract it bends the elbow joint: False.
Muscles act controlling function of the elbow. The specific muscles which control the movement of the elbow, are called triceps and the biceps. The bicep contracts, pulling the lower arm up, and cause the elbow to bend. At this time the triceps have no activity and relaxes or lengthens.
5. there are more muscles in frowning than in smiling: True.
Frown used to indicate disapproval, displeasure, or concentration. As we do not produce this expression regularly like smiling it needs more effort to frown and need more muscles.
6. some forms stimuli are heat, light chemical pressure and electricity: True.
7. muscle are seen in all parts of the body: True.
8. contractibility returns muscles to their original form: True.
9. elasticity allow muscle to change their shape and size: True.