HLSC 2F95 Lecture Notes - Lecture 6: Endothelium, Bloodborne, Schwann Cell

• School: Brock University
• Department: Health Sciences
• Course: HLSC 2F95
• Professor: dr.macpherson

Document Summary

Central nervous system (cns): brain and spinal cord. Integrates, processes, and coordinates sensory input and motor output. Peripheral nervous system (pns): nerves and ganglia outside the brain and spinal cord. Provides sensory information to the cns and motor commands away from the cns. Afferent division: conveys impulses to the cns from sensory receptors located throughout the body. Efferent division: transmits impulses from cns to effector organs (muscles and glands: somatic nervous system: skeletal muscles, autonomic nervous system: parasympathetic and sympathetic divisions: smooth and cardiac muscle, glands. Neural tissue- specialized to conduct electrical signals: neurons: transmit information through electrical and chemical signals. Signals between neurons occur through synapses, specialized connections with other cells: neuroglia. Provide the framework for the neural tissue, maintain homeostasis, form myelin, and provide support and protection for neurons in the cns and pns. Anaxonic neurons: more than 2 processes, but axons cannot be distinguished from dendrites. Bipolar: 2 processes separated by cell body.