Terminology
What does the word "striated" mean?
striated means the tissue looks striped under a microscope
TRUE or FALSE: Skeletal muscles are made up of spindle shaped cells.
FALSE
What is the shape of smooth muscle cells?
Smooth muscle cells are spindle shaped.
The cardiac muscle has a nickname. What is it?
The cardiac muscle's nickname is "The Endless Pump".
Muscles make up about _?_% of your body weight.
Muscles make up about 40% of your body weight.
The suffix “-cyte” means what?
The suffix “-cyte” means cell.
What does it mean when we say "Skeletal muscles are completely voluntary"?
It means that you control every movement.
Are smooth muscles voluntary or involuntary?
Smooth muscles are involuntary.
TRUE or FALSE: Cardiac muscles are entirely involuntary.
TRUE
How many muscles are in the human body?
over 600 muscles
What structure attaches a muscle to a bone?
a tendon
Does your heart use skeletal muscles?
No
How many different layers of smooth muscles are in the stomach wall?
There are 3 different layers of smooth muscles that makes up the wall of your stomach.
What is the medical name given to cardiac cells?
The cardiac cells are called cardiomyocytes.
What is the hardest working muscle in the body?
the heart muscle
What does "multinucleated" mean?
It means the cell contains more than one nucleus.
TRUE or FALSE: Skeletal muscles help you maintain your posture.
TRUE
TRUE or FALSE: Smooth muscles are built to contract slowly and steadily without getting tired.
TRUE
The cardiac muscle forms the muscular middle layer of the heart wall. What is the name of that muscle?
The name of the cardiac muscle is the myocardium.
Where do you find the smallest muscle in the body?
The Smallest muscle is found inside your ear (stapedius), it’s smaller than a grain of rice.
Explain the procedure called an upper "endoscopy" that nurse Jackson talked about.
An endoscopy is a procedure where the doctor used a thin tube with a light, a camera, and a "claw" on the end to view the esophagus and remove the meat obstruction in nurse Jackson's story.
What do skeletal muscles look like?
The muscles are long, cylindrical, and they look striated (striped) under the microscope.
Explain how smooth muscles move food through the digestive tract.
Smooth muscles move food through the digestive tract by contracting and relaxing the muscles in the walls of the digestive tract.
What is special about the shape of cardiac cells?
The cardiac cells, cardiomyocytes are branched.
Are involuntary or voluntary muscles striated?
Voluntary muscles are striated.