In a healthy individual, dopamine secreting neurons of the substantia nigra
a. are at least partially responsible for our capacity to experience pleasure.
b. are involved in emotional responses.
c. All of these choices are correct.
d. participate in the control of voluntary movement.
Answer: c. All of these choices are correct.
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During organogenesis, somites do not give rise to which of the following?
A. Muscles of the trunk B. Vertebrae C. The spinal cord D. Dermis of the skin E. All of the choices are derivatives of somites.
What are the attachments of the plantaris?
a. Posterior tibia and fibula to the calcaneus via the calcaneal tendon b. Proximal lateral fibula to the medial foot c. Medial and lateral femoral condyles to the calcaneus via the calcaneal tendon d. Distal posterolateral femur to the calcaneus
Ammonia is
A. a waste product of fatty acid metabolism. B. exhaled by the lungs into the air. C. processed by the liver to form urea, a less toxic compound. D. a waste product of fatty acid metabolism and is excreted by the kidneys into urine. E. a polypeptide containing many amino acids.
The epidermis is about ________ mm thick and the dermis is about ________ mm thick.
A. 0.01 to 0.10; 0.10 to 1.0 B. 1.0 to 2.0; 0.07 to 0.12 C. 3.0 to 4.0; 5.0 to 6.0 D. 0.07 to 0.12; 1.0 to 2.0