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When a muscle fiber contracts, it contracts at its full capacity. This is called:
the all-or-none response.
When a section of the neuron is stimulated by an action potential:
the exterior of the cell becomes negative.
An action of an appendage that makes a cone-shaped movement and draws a circle at the distal end.
What are the functions of bone?
Support, protection, mineral storage, and blood formation (hematopoiesis)
Spongy bone is characterized by:
open spaces partially filled by an assemblage of needle-like structures (trabeculae)
a simple sugar (monosaccharide) that comes from carbohydrates. (the body's preferred energy source).
One of the methods of determining the extent (surface area effected) of a burn injury is:
the "rule of nines."
One of the methods of determining the degree (depth) of a burn injury is:
first degree, second degree, and third degree.
The serous membranes in the thoracic cavity are called:
pleurae (visceral pleura and parietal pleura).
The medulla oblongata contains the "vital centers" for:
the cardiac, respiratory, and vasomotor functions.
Skin is composed of which layers of tissues?
epidermis and dermis. (hypodermis is technically not part of the skin)
The point of contact between the nerve and the muscle fibers it stimulates is
called: neuromuscular junction.
The minimal level of stimulation required to cause a fiber to contract is called:
a threshold stimulus.
The sympathetic nervous system is:
called the thoracolumbar system. known as the "fight or flight" system.
The parasympathetic nervous system is called:
cranuiosacral outlflow system. known as the "rest and digest" system.
nodes of Ranvier
= gaps in myelin that allows "spark" of action portential (impulse) to jump. Making it faster
afferent (sensory) neurons.
The types of neurons that carry impulses to the brain and spinal cord are called:
efferent (motor) neurons.
The types of neurons that carry impulses away from the brain and spinal cord are called:
myelinated neurons. = fast
The type of neurons that carry impulses away from the brain and spinal cord
are called: efferent neurons.
The type of neurons that carry impulses towards
the brain and spinal cord
are called: afferent neurons.
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