Nervous System Part #1
Identify 3 functions of Neuroglia.
Support, insulate, & protect delicate Neurons.
What is the function of the Midbrain?
Processing visual & auditory data
What is action potential?
An electrical impulse that travels through a motor neuron
What are joints?
Part of the body where 2 or more bones meet
In the lower limb, what is the patellar?
Kneecap
Explain the major function of Astrocytes.
Form a living barrier between Capillaries & Neurons.
What happens if there is no sodium entry into Nerve Impulses?
No action potential
____________ is superior to the Soleus.
Gastrocnemius
How are Tendons attached to Skeletal Muscle similar to puppet strings moving a puppet?
Skeletal muscles moves the tendons
If something is lateral, where is it going?
Away from middle
When the Neuron is Polarized, how does outside the Plasma Membrane compare with inside?
Less positive ions in internal face (inside) of Neuron’s Plasma Membrane than external face (outside).
Contrast Gyri & Sulci
Elevated ridges; shallow grooves
How does Skeletal Muscle have a Striated appearance?
Myosin & Actin filaments
List the 5 regions of the Vertebral Column from most inferior to most superior.
Cervical, Thoracic, Lumbar, Sacral & Coccyx
What is the difference between the sagittal plane & the medial plane?
Not in middle; middle
Describe the structure of Multipolar Neurons
A single branch with many dendrites
How can the Right Cerebral Hemisphere control movement on the Left Side of body?
Due to criss-crossing in the Corpus Callusum
Match up the order the electrical impulse travels through from first (1) to last (6).
Axon
Dendrite
Synapse
Nucleus
Cell Body
Axon Terminal
Dendrites, Cell body, Nucleus, Axon, Axon Terminal, Synapse
Put the Skeletal Muscle layers in order from innermost (1) to outermost (4).
___Fascicle
___Muscle Fiber Cell
___Skeletal Muscle
___Muscle Belly
Muscle Fiber Cell, Fascicle, Muscle Belly, Skeletal Muscle
Describe Psuedostratified columnar
"Fake" layers; one layer
Contrast Sympathetic Nervous System and Parasympathetic Nervous System
Sympathetic Nervous System: Stimulates = “fight or flight” response
Parasympathetic Nervous System: Inhibits = “rest & digest”
Where do Sensory & Motor Neurons conduct Nerve Impulses?
SN: Sensory receptors-CNS
MN: CNS brain-spinal cord
Fill in blanks in order from largest to smallest structure using the terms below.
_______ -> ______ —> _________ and Myosin.
Use these words: Actin, Muscle Fiber Cell, Myofibril.
Muscle Fiber Cell, Myofibril & Actin
Describe in everyday language the locations of the Axial and Appendicular Skeletons.
Axial: Skull, vertebrae, sternum, ribs & hyoid
Appendicular: Pectoral, girdle, pelvic, girdle, arms, forearms, wrists, hands, thighs, legs & feet
Describe the functions of the Connective Tissue
Protecting, supporting, cushioning, & isolating tissues