Exam 3

The human nervous system (HNS) compromises..

• Central Nervous System & Peripheral Nervous System

• Central Nervous System & Somatic Nervous System

• Sympathetic and Parasympathetic Nervous System

• Automatic & Somatic Nervous Systems

In general, afferent nerves carry sensory information...

• to the central nervous system

• to the peripheral nervous system

• from the central nervous system

• from the cortex

The automatic nervous system..

• enables us to act on the external environment

• transmits motor information to the brain

• regulates the internal environment

• is located within the brain

Saltatory conduction is make possible by..

• the myelin sheaths

• large nerve fibers

• diaphasic impulses

• erratic transmission of the nerve impulses

A neuron that has as its primary function the job of connecting other neurons is called a(n)..

• efferent neuron

• afferent neuron

• interneuron

• glial cell

which of the following is NOT a function of the autonomic nervous system?

• innervation of smooth muscle of the digestive tract

• innervation of cardiac muscle

• innervation of glands

• innervation of skeletal muscle

Which type of potential does not decay with distance?

• Graded Potential

• Action Potential

• Generator Potential

A change in membrane potential from -70mV to -40mV is termed...

• Repolarization

• Depolarization

• Hyperpolarization

• Hypopolarization

A bundle of several skeletal muscle fibers is called a(n)..

• Sacromere

• Muscle Cell

• Myofibril

• Fascicle

Skeletal muscle fibers are also surrounded by a cell membrane called..

• Sacrolemma

• Mrofibril

• Sacromere

• Myosin