Reference no: EM132933560

Topic: Function of the Nervous System  

The Nervous system (along with the Endocrine System) functions in communication within the body. Communication occurs through both chemical messengers (neurotransmitters) and electrical impulses generated by the movement of ions in and out of specialized cells called neurons. Glia are nervous system cells that support neuron function. 

• Identify each of the following as a being associated with neurons or glia
• Has an axon that propagates, and electrical impulse called an action potential away from the cell body.
• The cell type that is ten times more numerous in nervous tissue.
• Releases neurotransmitters to communicate with nearby neurons or other body cells.
• Forms the myelin sheath.
• Cells responsible for most brain tumors.
• Cells responsible for communication in the nervous system.

Neurons have a unique structure that suits their function in communication in the nervous system.

Match the part of a neuron with the appropriate description.

_____ Cell body                                               a. Part of a synapse (junction between cells)

_____ Axon                                                     b. Transmits information toward the cell body.

_____ Dendrite                                                c. Transmits information away from the cell body

_____ Axon terminal                                         d. Contains the nucleus and other organelles

Topic: Vertebrate Nervous System

All vertebrates (including humans) have a complex nervous system divided in two basic parts, a central nervous system (CNS) and peripheral nervous system (PNS).

• Assign each of the following to the CNS or PNS.
• Brain and spinal cord
• Somatic and autonomic divisions
• Protected by meninges
• Controls motor reflexes
• Processes input from sensory neurons
• Responsible for delivering information to muscles.

Topic: Skeletal Muscle Contraction

There are three types of muscle tissue that differ by location in the body and properties. 

• List the three muscle types below and include a location or locations where the muscle type is found.
• Which muscles are voluntary?
• Which muscles are involuntary?
• Which muscle(s) have striations?
• Which muscle type cells have a single nucleus?
• Which muscle type cells have multiple nuclei?