The thalamus, hypothalamus, and epithalamus are derivatives of which embryonic structure?
A. Telencephalon
B. Diencephalon
C. Mesencephalon
D. Metencephalon
E. Myelencephalon
B. Diencephalon
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Which chamber has the thickest wall?
A) left atrium B) right atrium C) left ventricle D) right ventricle E) left auricle
Lateral inhibition
1.is an effect of the brain on sensory receptors.
2.is inhibition of the most strongly stimulated receptor by neighboring receptors.
3.increases the sensitivity of a receptor.
4.is especially significant in receptors for chemical senses (olfaction and taste).
5.increases the acuity of a receptor.
What type of tissue are intervertebral discs composed of?
A. Elastic cartilage B. Areolar connective tissue C. Hyaline cartilage D. Fibrocartilage E. Elastic connective tissue
The training regimen of a competitive weight lifter is designed partly to ________
A) lower the threshold for muscle excitation B) convert certain parallel muscles into stronger pennate muscles C) increase the size of his motor units D) convert white muscle tissue to red muscle E) increase the average number of myofibrils per muscle fiber