PSY 140 WEEK 2 Knowledge Check
Introduction to Psychology
Match the Key Term with the proper definition:
1. Dendrites 1. Gene that has more than one different version.
2. Axons 2. A complex brain system, composed of the amygdala, hippo campus, and cingulate cortex, that works with the hypothalamus in emotional arousal.
3. Medulla 3. Glands that produce sex cells and hormones important in sexual arousal and that contribute to the development of secondary sex characteristics.
4. Gonads 4. The four chemical compounds (adenine, thymine, guanine, and cystine) located on the double helix of DNA.
5. Limbic system 5. The stable cell resulting from fertilization; in humans, it has 46 chromosomes--23 from the sperm and 23 from the ovum.
6. Chromosomes 6. Version of a polymorphic gene that produces a trait in an individual even when paired with a recessive gene.
7. Dominant gene 7. Strands of DNA (deoxyribonucleic acid) in cells.
8. Nucleotides 8. The swelling just above the spinal cord within the hindbrain responsible for controlling breathing and a variety of reflexes.
9. Polymorphic gene 9. Neuron branches that transmit messages to other neurons.
10. Zygote 10. Extensions of the cell body that usually serve as receiving areas for messages from other neurons.