Smooth muscles depolarize as a result of a transmembrane current of Calcium ions. When an action potential depolarizes the muscle cell membrane, it also travels into the body of the cell via the t-tubules. Unlike skeletal muscle, smooth muscle is dependent in two sources of calcium in order to intiate contraction. These two sources are calcium sequestered in the S.R. of the smooth muscle cell.
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Answer:
The only haploid cells in humans (with 23 chromosomes and no matching pairs) are:
A. sperm and egg cells
Answer:
Connective tissue that are found in muscle are of 3 types-Endomysium,Perimysium and epimysium.
Explanation:
Endomysium is called as areolar connective tissue that have nerve and capillaries.
It attaches with epimysium and perimysium and form collagen fibers of tendons.
Perimysium is a sheath of connective tissue that transmit lateral contractile movement.
Epimysium is the layer that is formed by irregular connective tissue .
This layer covers the muscle and provide protection from friction against muscle and bone.
This layer contain fascia and other connective tissue.
A seed of a flowering plant or gymnosperm may contain tissues from three generations. Similar to gymnosperms, angiosperms also are seed producing plants, but are distinguished from gymnosperms by features such as flowers, endosperm within the seeds, and the production of fruits that contain the seeds.
