Using your knowledge of somatic motor neuron communication t…

Using your knowledge of somatic motor neuron communication to skeletal muscle (you do not need to know anything about how skeletal muscle contracts to answer this), explain why a spinal cord injury “paralyzes” skeletal muscle despite no damage to the muscle itself. Name the specific neurons used in this communication pathway and the locations of their cell bodies in your answer. Note: realize that if the cell body of a neuron dies, the entire neuron will die but if the cell body remains intact, it’s possible for a neuron to recover. 

Extra Credit (5 Points): One morning while swimming in the G…

Extra Credit (5 Points): One morning while swimming in the Gulf of Mexico, Alphonso swims directly into the path of an evil sea monster, which bites off part of his left arm. The resulting blood loss sends Alphonso into shock by the time he is rescued. His symptoms include paleness, cool skin, tachycardia, and a weak pulse. Explain each of these symptoms in detail using correct physiological terminology.  Your answer should explain how and why they have occurred based on the body’s responses to this type of crisis.  You should summarize the short-term and long-term responses based on what you learned in Chapter 20 about blood pressure regulation. View the rubric for this question to see how it will be scored.

The table shows measurements of the beak size of a sample of…

The table shows measurements of the beak size of a sample of ten ground finches on two islands in the Galapagos archipelago. The two islands are about 10km apart, and all the birds are the same species. Given that beak size is genetically determined, which of the following hypotheses is the most likely explanation for the differences in data between the islands?  

Fill in the blanks with words. (Type Chinese characters)  …

Fill in the blanks with words. (Type Chinese characters)   一样(yí yàng) 其中(qí zhōng) 一边(yī biān) 才(cái) 一边(yī biān) 到(dào) 俩(liǎ) 同(tóng)   哥哥喜欢 听音乐,做作业。 我有很多书,这两本是我最喜欢的小说。 我和我朋友一起上一所学校。 妹妹的性格跟爸爸 ,他们都很善良。 姐姐去上大学了,我们只有周末可以通电话。 你不能从早晚不吃东西。