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PLTW Principles of Biomedical Sciences- Semester 2 Final Exam Review With 100% SURE ANSWERS
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JACKLINEPLTW Principles of Biomedical Sciences- Semester 2 Final
Exam Review With 100% SURE ANSWERS
Terms in this set (109)
hands are the most frequently used body part that also has the most variety of uses; because
Why do we need so many muscles in our hands,
we can/need to do so many things with our hands, they have many more joints and muscles
wrists, and arms?
than other parts of our bodies
What organ systems work together to move your cardiovascular, respiratory, circulatory, nervous, digestive, skeletal, etc
arm, your wrist, and your fingers?
there are so many joints, bones, and muscles in our limbs that have very specific movements
What are some factors that make design of a
and therefore very varying functions; reproducing that is very hard without a central nervous
prosthetic limb for human use a difficult task?
control system
before they used to be made out of wood, metal, leather, etc; now they are much more
How have prosthetic limbs changed throughout mechanical, with high-tech metal, even plastic parts that work together to create movements
history? that can be more helpful; there are even prosthetics (prototypes) that can receive signals from
PLTW Principles of Biomedical Sciences- Semester 2 Final Exam Review
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, How have myoelectric control and targeted now, the patient can obtain a prosthetic that acts like an actual limb that moves the way that the
muscle reinnervation revolutionized prosthetic brain would tell a normal limb to move
limb technology?
We have an expert-written solution to this problem!
an electrically-powered prosthesis uses rechargeable battery to power small electric motors
that move the prosthetic; when a muscle is contracted a small electrical signal (EMG) is
Explain how myoelectric arms are controlled by
created by a chemical interaction in the body; an electrode is attached to the surface of the
the patient.
skin to record the EMG signal; once recorded, the signal is amplified, then processed by a
controller that switches the motors on or off to produce movement
Soft tissues are the tissues that connect, support,
Describe soft tissue and surround other structures and organs of the
body, not being bone.
What are some examples of soft tissue in the tendons, ligaments, fascia, skin, fibrous tissues, fat, synovial membranes (connective tissues),
body? muscles, nerves, and blood vessels.
Which soft tissue connects bone to bone? ligament
What is muscle? tissue that when stimulated contracts
(a characteristic that makes muscle muscle) and produces movement
Which soft tissue connects muscle to bone? tendon
What is a soft tissue injury? damage of skin, muscles, ligaments, and tendons throughout the body
What are the most common causes of a soft sprain, strain, blow resulting in contusion, overuse of particular body part
tissue injury?
R-redness
H-heat
What are the 5 signs of inflammation? S-swelling
P-pain
L-loss of function
What is vasodilation? dilation or narrowing of blood vessels
Why does redness occur after a soft tissue due to vasodilation and increase in blood flow
injury?
PLTW Principles of Biomedical Sciences- Semester 2 Final Exam Review
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