In this article we will discuss about the characteristics of skeletal, smooth and cardiac muscles of human body. Characteristics of Skeletal Muscle: Histology: 1. Size and Shape: Cylindrical; 1-40 mm long, 10 to 100 μ in diameter. 2. Striations: Transverse, longitudinal. 3. Sarcolemma: Present and complete. 4. Nucleus: Multiple, just under the Sarcolemma. 5. Sarcotubular System: Present, T-systems are at [...]
In this article we will discuss about the properties and factors affecting the activity of smooth muscles in human body. Properties of Smooth Muscles: Broadly speaking, properties of the smooth muscle are same as those of the skeletal muscle, with the following differences: i. Excitability and Contractility: Smooth muscle is less excitable. Contraction is slow, and worm-like. All the periods [...]
In this article we will discuss about:- 1. Composition of Skeletal Muscles 2. Properties of Skeletal Muscles 3. Vascular Arrangement 4. Rate of Blood Flow 5. Control of Skeletal Muscle Blood Flow 6. Contractions. Composition of Skeletal Muscles: Skeletal Muscles Composition: i. Water—75% ii. Solid-25% Solids: 1. Proteins: 20%. Actin and myosin form about half the total muscle protein. Myosin, [...]