
(a)
To determine: The condition of a person whose heart rate quickened, and the hairs on the arm have stood due to letting out a scream.
Introduction: The stress or fright conditions are controlled by the sympathetic nervous system of the body.
(b)
To determine: The region of the brain that processes fear.
Introduction: The three main parts of the human brain are the cerebrum, cerebellum, and brainstem. The largest part of the brain is the cerebrum.
To determine: The function of the limbic system of the brain.
Introduction: The limbic system operates by influencing the endocrine system and the autonomic nervous system. The limbic system is a network of structures located under the cerebral cortex.
To determine: The branch of the motor output that controls the limbic system.
Introduction: The limbic system is important because it controls some behaviors that are important to the life of all mammals. The limbic system is the portion of the brain that deals with the functions of emotions, memories, and arousal.
To determine: The target organs for the given response.
Introduction: Target organ refers to a specific organ on which a drug, a hormone, or other substances act.
(c)
To determine: The reason that hair stands on one end, while hair is composed of the proteins that do not contract.
Introduction: Hair is made of a protein known as keratin. Keratin is a tough protein that protects epithelial cells from damage or stress.
To determine: The type of tissue attached to hair follicles.
Introduction: Hair follicle is a part of the skin, which includes sebaceous glands, nerves, and blood vessels.

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Chapter 13 Solutions
Human Physiology: An Integrated Approach (7th Edition)
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- 5G JA ATTC 3 3 CTIA A1G5 5 GAAT I I3 3 CTIA AA5 Fig. 5-3: The Eco restriction site (left) would be cleaved at the locations indicated by the arrows. However, a SNP in the position shown in gray (right) would prevent cleavage at this site by EcoRI One of the SNPs in B. rapa is found within the Park14 locus and can be detected by RFLP analysis. The CT polymorphism is found in the intron of the Bra013780 gene found on Chromosome 1. The Park14 allele with the "C" in the SNP has two EcoRI sites and thus is cleaved twice by EcoRI If there is a "T" in that SNP, one of the EcoRI sites is altered, so the Park14 allele with the T in the SNP has only one EcoRI site (Fig. 5-3). Park14 allele with SNP(C) Park14 allele with SNPT) 839 EcoRI 1101 EcoRI 839 EcoRI Fig. 5.4: Schematic restriction maps of the two different Park14 alleles (1316 bp long) of B. rapa. Where on these maps is the CT SNP located? 90 The primers used to amplify the DNA at the Park14 locus (see Fig. 5 and Table 3 of Slankster et…arrow_forwardFrom your previous experiment, you found that this enhancer activates stripe 2 of eve expression. When you sequence this enhancer you find several binding sites for the gap gene, Giant. To test how Giant interacts with eve, you decide to remove all of the Giant binding sites from the eve enhancer. What results do you expect to see with respect to eve expression?arrow_forwardWhat experiment could you do to see if the maternal gene, bicoid, is sufficient to form anterior fates?arrow_forward
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