When muscles contract, -sarcomeres increase in length -actin breaks down ATP -th
ID: 98644 • Letter: W
Question
When muscles contract,
-sarcomeres increase in length
-actin breaks down ATP
-the m-line slides past actin
-calcium is taken up by the sarcoplasmic reticulum (SR)
-the H zone disappears
Systemic circulation can be described as the circulatory route that delivers blood from the left ventricle to the tissues of the body and then back again to the right atrium.
-True
-False
Symptoms of weight gain in the trunk of the body (not the limbs) and in the face are characteristic of
-diabetes mellitus type II
-diabetes mellitus type I
-hyperthyroidism
-cushing syndrome
The _________ is an elaborate network of tunnels within the muscle cell filled with calcium.
-transverse tubule (T-tubule)
-sarcoplasmic reticulum (SR)
-sarcolemma
-tropomyosin
-Cortisol
-opposes the action of calcitonin
-acts to increase blood glucose levels
-impairs the functioning of the liver
-is secreted by the thyroid
-is secreted by the pancreas
Which of the following procedures is the correct term for the process of simultaneously placing both the sperm and the egg into the fallopian tubes to increase the chances of fertilization?
-in vitro fertilization (IVF)
-artificial insemination
-surrogate motherhood
-gamete intrafallopian transfer (GIFT)
Which of the following contributes to relaxation of a muscle cell?
-acetylcholinesterase (AChE)
-lengthening of the sarcomer
-resequestering of calcium
-all of the above
Calcium, when released into the muscle cell, binds to
-the Z line
-troponin
-myosin heads
-T-tubules
The part of the neuron that typically receives the message from another neuron is the
-synaptic knob
-axon
-dendrite
-myelin
Sperm are haploid.
-True
-False
Explanation / Answer
1.) the H-zone disappears.
2.) true.
3.) cushing syndrome.
4.) sarcoplasmic reticulum(SR).
5.) in- vitro fertilization (IVF).
6.) acetylcholinesterase(AChE).
7.) myosin heads.
8.) dendrite.
9.) true.
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