Which of the following is/are true regarding dynamic equilibrium?
A. applies to bodies in motion
B. first identified by D'Alembert
C. both A and B
D. there is no such thing as dynamic equilibrium
C. both A and B
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To perform surgery with a minimum of pain for the patient and hassle for the surgeon, a patient may be administered a general anesthetic to prevent sensation and consciousness, as well as a paralytic to prevent reflexive muscle spasms. From what you have learned of motor control, suggest mechanisms by which a paralytic can prevent muscle contraction. With paralytics, what extra measure must be
taken to keep the patient alive? Name such a paralytic agent. What will be an ideal response?
The fluctuating levels of __________ bring about cyclic changes in neural output from the suprachiasmatic nucleus that, in turn, lead to cyclic changes in effector organs throughout the day
Fill in the blank(s) with correct word
In spermatozoa, a structure called the acrosome:
a. Contains dynein arms that control sperm motility b. Contains proteolytic enzymes that function during fertilization of an ovum by sperm c. Is a focal accumulation of rough endoplasmic reticulum d. Localizes around mitochondria in the midpiece of the flagellum e. Regulates the condensation of nuclear DNA
The volume of air that is moved into or out of the respiratory tract in one breath is called:
A) tidal volume. B) alveolar volume. C) minute volume. D) inspiratory reserve volume.