MUSCLE PHYSIOLOGY

Detailed explanation-1: -Skeletal muscle – the specialised tissue that is attached to bones and allows movement. Smooth muscle – located in various internal structures including the digestive tract, uterus and blood vessels such as arteries. Cardiac muscle – the muscle specific to the heart.

Detailed explanation-2: -Cardiac muscle is highly organized and contains many types of cell, including fibroblasts, smooth muscle cells, and cardiomyocytes.

Detailed explanation-3: -Human skeletal muscle is composed of a heterogenous collection of muscle fiber types. This range of muscle fiber types allows for the wide variety of capabilities that human muscles display. The three types of muscle fibres are slow oxidative (SO), fast oxidative (FO) and fast glycolytic (FG).

Detailed explanation-4: -Types of Smooth muscle Smooth muscles are of two types. They are: Single-unit (visceral) smooth muscle: All the cells function collectively and simultaneously as a single unit (unitary). Multiunit smooth muscle: It is a type of muscle in which all the cells cannot function collectively and work independently.

Detailed explanation-5: -Both skeletal and cardiac muscles appear striated, or striped, because their cells are arranged in bundles. Smooth muscles are not striated because their cells are arranged in sheets instead of bundles.