The first animals with simple nerve nets probably evolved about _________ years ago.
A. 4.5 billion
B. 3.5 billion
C. 700 million
D. 250 million
Answer: C
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When your doctor uses a stethoscope to listen to your heart, the doctor is gathering information by using the ____
a. method of authority b. rational method c. empirical method d. method of intuition
Answer the following statements true (T) or false (F)
1. The gate-control theory of pain states that signals arriving from pain receptors can be blocked by interneurons in the spinal cord. 2. The gate-control theory of pain states that signals arriving from pain receptors can be blocked by opiate drugs in the somatosensory cortex. 3. Information about balance is registered in the inner ear. 4. Motion sickness is caused by a mismatch between the information provided by auditory cues and vestibular feedback. 5. The vestibular system is composed of four types of touch receptors and thermoreceptors.
At the center of all defense mechanisms is
A.) suppression B.) pleasure C.) repression D.) moral anxiety
Which of the following situations is most likely to occur according to the law of effect?
A. A person who receives a desired message is more likely to check emails more often. B. A person who injures his knee while exercising a few times is more likely to exercise more often. C. A person who receives a reply that is less interesting than an ongoing lecture is more likely to keep on texting. D. A person who feels less energetic after drinking coffee one morning is more likely to have coffee every morning.