BIO252 WK 1 LAB
MUSCULAR
SYSTEM
ANATOMY &
PHYSIOLOGY II
2024 latest
, lOMoAR cPSD| 48519099
Learning Objectives:
• Describe the major roles of muscle tissue
• Demonstrate how muscle contraction and relaxation are linked to thermoregulation,
digestion, circulation, and motor function.
• Differentiate smooth, cardiac, and skeletal muscle based on their microstructure.
• Describe the general organization and structural components of a skeletal muscle.
Explain the principle of the sliding filament mechanism of skeletal muscle Identify
major muscles and their functions.
Introduction
Did you know that you have more than 600 muscles in your body? Some of these muscles help
to express your emotions through gesticulation and facial expressions, while the heart beats more
than 3.3 billion times over 80 years! In this simulation, you will take a closer look at the three
distinct muscle tissues we find in the human body and what purpose they serve.
Your first task is to learn about the different types of muscle tissues found in the human body.
Interact with the anatomical 3D holograms to explore the distribution and main functions of
skeletal, smooth, and cardiac muscle tissues. Using the control panel to navigate the different
models, you will have to collect information about the tissues to solve different scenarios related
to the muscular system.
Continue your investigation by examining the muscle tissues at the cellular level to see how the
individual muscle cells of each muscle tissue compare and contrast from one another. Pick up
the cellular 3D models and examine the nuclei, myofibrils, mitochondria and more to understand
how the intracellular components enable each muscle cell to perform the functions characteristic
for that muscle tissue.
Follow the pathway that allows a nerve signal initiated in the brain to induce an actual muscle
contraction in a skeletal muscle. Dive into the molecular level and see how the myofibrils are
arranged in repeating units of sarcomeres. Compare a 3D model of a sarcomere to its electron
micrograph and observe the changes that take place during contraction and relaxation. Finally,
immerse yourself in the process of the sliding filament theory by interacting with the contractile
proteins of a sarcomere.
Explore the major muscles of different body regions in Anatomy.TV.
Assignment:
Part 1: Labster: “Muscle Tissues: An Overview”
As you complete the lab, have the lab report ready to record data. The theory section of Labster
is a good resource for information.
Part 2: Complete the following activities in Anatomy.TV
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