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BIO252 2024/2025 BIO 2 LAB EXAM WEEK 1 UGU WITH 100% CORRECT ANSWERS
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BIO252 2024/2025 BIO 2 LAB EXAM WEEK 1 UGU WITH 100% CORRECT ANSWERS
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BIO252 2024/2025 BIO 2 LAB EXAM WEEK 1 UGU WITH 100% CORRECTANSWERS
Week 1 Lab Instructions
Lab Safety / Muscle Structure
Activity Deliverable Points
Part A Basic Laboratory Information and PPE
Part B Lab Safety Training and Certification: Digitally Submitted Not Graded
but
Required
Part C Introduction to the Histology of Muscles 30
All Lab Complete Parts A, B, and C 30
Deliverables
References:
1. Saladin Anatomy & Physiology: The Unity of Form and Function
PART A: RECEIVE BASIC LAB INFORMATION AND PPE
Obtain overview of physical laboratory, facility and receive PPE – disposable laboratory jacket.
1.0 – Attend first physical laboratory during Week 1
1.1 – Pay attention to the instructor
1.2 – Take notes concerning fire exits, fire extinguisher, eye bath, emergency shower, chemical
spill kit, red bag waste, broken glass waste, normal waste and MSDS handling documents
1.3 – Receive a disposable laboratory jacket and storage bag to reuse the jacket until it becomes
visibly soiled.
PART B: COMPLETE LAB SAFETY TRAINING AND CERTIFICATION
Laboratory Safety Training Procedures, Lab Safety Critical Thinking Questions, and Certification
Statement
Review the Laboratory Safety Training Slides located in the Files
2.0– Review the slides
2.2 – Complete the attached Laboratory Safety Critical Thinking questions
2.3 – Double check your answers to the safety critical thinking questions and submit completed
worksheet to your professor or upload into Canvas
2.4– Complete and sign the Lab Safety Training Questions and Sign Digitally before coming to
your scheduled lab time in week 1.
BIOS252 Week 1 Lab Instructions (B) Page 1 of 12
1/12
, Part C: Introduction to the Histology of Muscles
BACKGROUND – HISTOLOGY OF MUSCLES
In the human body, muscles provide the ability of the body to move. Muscles are cells that alternate
between contraction and relaxation. This alternation allows the muscles to produce work including but
not limited to:
• Producing body movements
• Stabilizing body positions
• Storing and moving substances within the body
• Generating heat
Muscles have four unique properties to help them contribute to homeostasis in your body:
• Electrical excitability
• Elasticity
• Contractility
• Extensibility
Muscles or myocytes are divided into three categories based on both their structure and their function:
1. Skeletal muscle
2. Cardiac muscle
3. Smooth muscle
Skeletal muscle – is commonly found attached to bone or skin. This type of muscle is
responsible for voluntary movement and posture. Skeletal muscle is commonly described as being:
long, thin, cylindrical, multinucleated, and striated (stripped in appearance). Skeletal muscle is
arranged into contractile units known as sarcomeres. This arrangement allows for the contractile
proteins actin and myosin to slide (move) on top of one another causing the muscle to shorten. This is
known as the Sliding Filament Theory.
a. Skeletal Muscle
Striations
Multinucleated
BIOS252 Week 1 Lab Instructions (B) Page 2 of 12
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