(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.
Want to see the full answer?
Check out a sample textbook solutionChapter 13 Solutions
Human Physiology: An Integrated Approach Plus Mastering A&P with Pearson eText -- Access Card Package (8th Edition) (What's New in Human Physiology)
- Which of the following is not true about the life-cycle of Fucus. a. 8 eggs per oogonium b. 64 sperm per antheridium c. eggs are flagellated d. sperm are flagellatedarrow_forwardGreen Algae, as a group, is actually paraphyletic with one subgroup more closely related to higher plants than the other. Which of the following green algae groups is more closely related to higher plants: a. Charophyceans b. Chlorophyceans c. Rhodophyta d. Xanthophyceansarrow_forwardCertain toxic terpenoids in this group is thought to deter herbivory but may also have some anti-tumor activity? a. green algae b. brown algae c. red algae d. golden algae e. none of thesearrow_forward
- In the cellular slime molds, the most common phase is: a. plasmodium b. pseudoplasmodial c. single cells as myxamoebae d. moundingarrow_forwardWhich of the following descriptive terms does not describe Hydrodictyon? a. colonial b. nonmotile c. 1 large reticulated chloroplast in each cell d. all of these describe Hydrodictyonarrow_forwardWhich of the following does not apply to Chara? a. "stoneworts" b. isogamous c. calcified walls d. apical growth with an axis and branchesarrow_forward
- Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage LearningBiology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage Learning
- Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning