Laszlo Vass, Ed.D. Version 42-0006-05-01
Lab Report Assistant
This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions, diagrams if needed, and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable file which can be sent to an instructor.
Explain why you did this exercise. Where there any safety precautions you needed to follow? If so, what were they?
The purpose of this exercise is to learn the anatomy and over all composition of how the heart works and the blood flows through the four chambers of the heart. Always follow the Labpaqs MSDS: Material Safety Data Sheet and do all dissection / use in well-ventilated area.
Exercise 1: Microscopic Anatomy of Cardiac Muscle Observations
Sketch and label your slide in the space provided. Include a description of the structures you observed on the slide. cardiac muscle
A. What are some unique structural features of cardiac muscle?
The cardiac muscle is essentially limited to the heart. As far as the structural features include a striated appearance that allows for strong muscle contractions, but it also differs from skeletal muscle. Although the cells are much shorter, so they are called myocytes rather than fibers. Cardiac muscle is considered involuntary because it is not usually under conscious control; it contracts even if all nerve connections to it are severed. Cardiac muscle's role is to pump blood oxygenated blood containing nutrients to body tissues and deoxygenated blood to the lungs to