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Lecture notes of 2 pages for the course Bio 160 at Mesa Community College (Notes)

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  • October 26, 2024
  • 2
  • 2024/2025
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  • Sara sanders
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[LECTURE STUDY GUIDE] Unit 2



Unit Objectives:
• Describe the structure and function of the skeletal system and joints
• Describe the structure and function of the muscular system
• Describe the structure and function of the nervous system

Relevant Topics in Textbook:
Chapter 7 Skeletal System
Chapter 8 Muscular System
Chapter 9 Nervous System
Chapter 10 The Senses

Lecture Exam Review Questions: Lecture 14

Autonomic Nervous System

1. Describe the role of the Autonomic Nervous System (ANS) in regulating homeostasis.

• Autonomic division involuntary control of internal organs glands and smooth muscle

a. What organs (or tissues) do the ANS vs the Somatic Nervous System regulate?

• Autonomic NS – smooth muscle
• Somatic NS – skeletal muscle

2. What parts of the brain are important in regulating the ANS?

• Hypothalamus and medulla oblongta

3. Compare and contrast the effects of the sympathetic and parasympathetic divisions of the ANS on
the following organs:

• Sympathetic Nervous System (SNS) – Fight or flight
a. Heart – increases heart rate makes cardiac muscles cells contract with more force
b. Bladder – relaxes smooth muscle of the bladder wall
c. Digestive tract – decreases digestive activity

• Parasympathetic Nervous System (PSN) – Rest and digest
a. Heart – decreases heart rate
b. Bladder – causes contraction to urinate
c. Digestive tract – increases digestion
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