Question

When a muscle produces tension but increases in length, this is called a(n)

	A.	isometric contraction
	B.	isotonic contraction
	C.	concentric contraction
	D.	eccentric contraction
	E.	both B and D are correct

Answer 1

Answer- E

Both B and D

Explanation- the tone is the partial state of muscle contraction at passive state

The contraction of muscle can be Isotonic and Isometric

The isotonic is the muscle contraction where the tension produce is constant but the length of the muscle will change

It further can be Eccentric or concentric

When the muscle length increase it is called Eccentric

When the muscle length decrease it is called Concentric .

Isometric contractions are those where the length of muscle remains constant but the tension changes

Examples - when we lift up the heavy weight contracting our biceps is concentric muscle contraction and then controlled lowering of this weight is eccentric contractions

Thank you ?