Curated OER
Muscles
In this muscles worksheet, learners describe characteristics of the three types of muscle and the function of each. Then they describe the gross and microscopic anatomy of skeletal muscle. Students also describe the steps that occur in a...
OpenStax
Open Stax: Smooth Muscle
This site provides an explanation of smooth muscle, muscle that is present in the walls of hollow organs like the urinary bladder, uterus, stomach, intestines, and in the walls of passageways, such as the arteries and veins of the...