Table of contents

1. Introduction to Biology2h 42m
2. Chemistry3h 37m
3. Water1h 26m
4. Biomolecules2h 23m
5. Cell Components2h 26m
6. The Membrane2h 31m
7. Energy and Metabolism2h 0m
8. Respiration2h 40m
9. Photosynthesis2h 49m
10. Cell Signaling59m
11. Cell Division2h 47m
12. Meiosis2h 0m
13. Mendelian Genetics4h 44m
14. DNA Synthesis2h 27m
15. Gene Expression3h 6m
16. Regulation of Expression3h 31m
17. Viruses37m
- Viruses
  37m
18. Biotechnology2h 58m
19. Genomics17m
- Genomes
  17m
20. Development1h 5m
21. Evolution3h 1m
22. Evolution of Populations3h 53m
23. Speciation1h 37m
24. History of Life on Earth2h 6m
25. Phylogeny2h 31m
26. Prokaryotes4h 59m
27. Protists1h 12m
28. Plants1h 22m
29. Fungi36m
- Fungi
  19m
- Fungi Reproduction
  17m
30. Overview of Animals34m
- Overview of Animals
  34m
31. Invertebrates1h 2m
32. Vertebrates50m
33. Plant Anatomy1h 3m
34. Vascular Plant Transport1h 2m
- Water Potential
  1h 2m
35. Soil37m
- Soil and Nutrients
  20m
- Nitrogen Fixation
  16m
36. Plant Reproduction47m
- Flowers
  33m
- Seeds
  14m
37. Plant Sensation and Response1h 9m
38. Animal Form and Function1h 19m
39. Digestive System1h 10m
- Digestion
  1h 3m
- Blood Sugar Homeostasis
  7m
40. Circulatory System1h 49m
41. Immune System1h 12m
42. Osmoregulation and Excretion50m
- Osmoregulation and Excretion
  50m
43. Endocrine System1h 4m
- Endocrine System
  1h 4m
44. Animal Reproduction1h 2m
- Animal Reproduction
  1h 2m
45. Nervous System1h 55m
- Neurons and Action Potentials
  1h 8m
- Central and Peripheral Nervous System
  46m
46. Sensory Systems46m
- Sensory System
  46m
47. Muscle Systems23m
- Musculoskeletal System
  23m
48. Ecology3h 11m
49. Animal Behavior28m
- Animal Behavior
  28m
50. Population Ecology3h 41m
51. Community Ecology2h 46m
52. Ecosystems2h 36m
53. Conservation Biology24m
- Conservation Biology
  24m

47. Muscle Systems

Musculoskeletal System

General Biology

47. Muscle Systems

Musculoskeletal System

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1:52 minutes

Problem 1

Textbook Question

Which of the following statements regarding control of muscle tissue is/are correct? Select True or False for each statement.
T/F All skeletal muscles are voluntary.
T/F Cardiac muscle is involuntary.
T/F Some smooth muscle tissues are voluntary, and others are involuntary.
T/F Parasympathetic and sympathetic neurons innervate skeletal, cardiac, and smooth muscle tissues.

Verified step by step guidance

Understand the types of muscle tissues: Skeletal, Cardiac, and Smooth. Skeletal muscles are generally under voluntary control, meaning you can consciously control their movement.

Cardiac muscle is found in the heart and is involuntary, meaning it functions without conscious control. It is regulated by the autonomic nervous system.

Smooth muscle is found in various parts of the body such as the walls of blood vessels and the digestive tract. It is generally involuntary, but some smooth muscles can be controlled voluntarily, such as those in the urinary bladder.

The autonomic nervous system, which includes parasympathetic and sympathetic neurons, primarily innervates cardiac and smooth muscle tissues, not skeletal muscles. Skeletal muscles are innervated by the somatic nervous system.

Evaluate each statement based on the understanding of muscle control: Skeletal muscles are voluntary, cardiac muscles are involuntary, smooth muscles can be both, and autonomic neurons do not innervate skeletal muscles.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Voluntary vs. Involuntary Muscle Control

Muscle control is categorized into voluntary and involuntary types. Voluntary muscles, like skeletal muscles, are consciously controlled, allowing movements such as walking. Involuntary muscles, such as cardiac and most smooth muscles, operate without conscious control, managing functions like heartbeats and digestion.

Types of Muscle Tissue

There are three main types of muscle tissue: skeletal, cardiac, and smooth. Skeletal muscles are attached to bones and facilitate movement. Cardiac muscle is found in the heart and is responsible for pumping blood. Smooth muscle is located in walls of hollow organs and helps in processes like peristalsis in the digestive tract.

Autonomic Nervous System

The autonomic nervous system (ANS) regulates involuntary physiological functions and is divided into sympathetic and parasympathetic systems. It innervates cardiac and smooth muscles, controlling heart rate, digestion, and other automatic functions. Skeletal muscles are primarily controlled by the somatic nervous system, not the ANS.