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Endoplasmic Reticulum – Types and Functions

Endoplasmic reticulum is a network of tubular and microsomal vesicular structures which are adjoined with one another. It is covered by a restricting membrane which is formed by proteins and bilayered lipids. The lumen of endoplasmic reticulum consists of a fluid medium called endoplasmic matrix. The size

Cellular Respiration and Its Importance

Cells need a consistent supply of energy to power the chain reaction of life. This energy is straight provided by ATP molecules Due to the fact that cells have a minimal supply, ATP molecules should continuously be produced by cellular respiration in order to sustain life. Cellular

Signal Transduction – Membrane And Lipid-Soluble

Membrane Receptor Signal Transduction Proteins, peptides, and charged molecules do not easily diffuse across the cell membrane. Consequently, the cell membrane can serve as a barrier to cell-to-cell communication when such agents are used as neurotransmitters and hormones. This communication barrier is overcome by use of proteins

Articulations – Immovable, Slightly Movable, or Freely Movable Joints

The junction between two bones or between a bone and a tooth forms an articulation, or joint. Joints allow varying degrees of movement and are categorised as immovable, slightly movable, or freely movable. Immovable Joints Bones forming an immovable joint, or synarthrosis (sin-ar-thro’-sis), are tightly joined and

Autonomic Nervous System (ANS)

The Autonomic Nervous System or ANS is a major mechanism for neural control of physiologic functions. The autonomic nervous system (ANS) consists of portions of the central and peripheral nervous systems and functions without conscious control. Discussions of ANS usually take one of three perspectives: An anatomic

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