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A&P Final

Terms in this set (33)

What determines the function of a joint?
shape of articulating bones
T/F: Tissues are composed of multiple cell types
True and False
T/F: Within the body, all atoms combine to form molecules
False
T/F: Within the body, all molecules are found inside cells
False
Does DNA code for the structure of carbohydrates?
No. DNA codes for proteins
What type of RNA are responsible for translating mRNA into proteins?
Both free and fixed ribosomes
osteocyte
mature bone cell
Perimysium
tissue surrounding a single bundle of muscle fibers
Epithelial tissue
skin
connective tissue
bone
muscle tissue
heart, skeletal muscle
nervous tissue
brain
What is the effect of pH on enzyme activity
pH needs to be at an optimum range for the enzyme to work well (can't be too low or too high)
How does exercise increase bone density?
osteoblasts are activated and stimulated
calcitonin tones down
blood calcium
PTH hormone
increases blood Calcium
calcitriol pairs with
PTH (we get it from Vitamin d3)
What cells will be activated by PTH?
osteoclasts
fermentation happens when there is not
sufficient oxygen
parallel muscles
shorten more but don't create a ton of force
pennate muscles
shorten less but make a lot of force
How do the cells of the stratum basale compare to the stratum corneum?
stratum corneum cells are flatter, basale are cubed
cells of stratum basale have one layer of cubed cells, cells of stratum corneum have many layers of cells squished together
Nuclei are in
spinosum and basale
lipids are in
spinosum
keratin is found in
spinosum all the way up to the surface NOT DOWN
T/F: anaerobic metabolism comes before aerobic metabolism even when oxygen is present
True
During peak exertion, how is most ATP supplied to a skeletal muscle?
by non mitochondrial means (this is short so through glycolysis)
Why can't the mitochondria supply enough ATP during peak exertion?
not enough oxygen available
100-400m race uses
phosphocreatine PCr
400-1500m race uses
anaerobic glycolysis
marathon race uses
aerobic metabolism
Faster the running speed
the more ATP needed and created
If skeletal muscles cannot respond to neural stimuli
contractions stop
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