ANATOMY

Detailed explanation-1: -Finally, although the smooth muscle cells do not rely on oxygen to contract, they contract the slowest of all the muscle types due to a different mechanism of contraction.

Detailed explanation-2: -Answer and Explanation: (a) The muscle type that is slow to contract is smooth muscle. It is known to produce slow contractions because the smooth muscle has calcium channels which open much more slowly that other muscles.

Detailed explanation-3: -They are responsible for the rhythmic involuntary movements of these organs. Their contraction is relatively slower than that of skeletal muscles. Nevertheless, the smooth muscle tissues remain contracted for longer periods than the skeletal muscle tissues.

Detailed explanation-4: -In general, smooth muscles contract more slowly than do skeletal muscle fibers and maintain the contraction for longer periods of time. Smooth muscles can be divided into phasic muscles which contract more rapidly and tonic muscles which contract slowly and maintain tension for long periods of time.

Detailed explanation-5: -Smooth muscle cell contraction is slow and depends on the autonomic nervous system. Cardiac muscle cells are mononucleate striated cells, with fast, rhythmic, spontaneous contractions.