That's My Type
This muscle type is non-striated.
Don't forget where this all starts! The less mobile attachment of skeletal muscle describes this point where muscle is attached to a bone.
What is the origin?
Most smooth muscle that exists in the body is this type in which a group of muscles acts together as a single unit.
What is the visceral type?
This layer of the heart contains primarily cardiac muscle cells.
What is the myocardium?
This type of contraction is the typical form seen in which muscle moves the bone it is attached to be shortening in length.
What is concentric contraction?
This muscle type contracts involuntarily, driven by the combined effects of the autonomic nervous system and its own pacemaker cells.
What is cardiac muscle?
Also known as a muscle bundle, this word describes a bundle of skeletal muscle fibers that is surrounded by a layer of connective tissue called the perimysium.
What is a fascicle?
This neurotransmitter acts on muscarinic receptors in smooth muscle to cause contraction.
What is acetylcholine?
You're so special, just like these structures in cardiac muscle that contain gap junctions and allow cells to act as a unit.
What are intercalated discs?
Although it's attached to several bones, this specialized skeletal muscle does not move a rigid joint. Take a deep breath before giving your response.
What is the diaphragm?
This muscle type is generally mononucleated, but can sometimes be binucleated.
What is cardiac muscle?
This extensive network of tubules is actually a muscle-specifically adapted endoplasmic reticulum designed to store calcium.
What is the sarcoplasmic reticulum?
In smooth muscle, these protein dense regions are that anchor the actin filament and function similar to the Z disc in skeletal muscle.
What are dense bodies?
What is the sinoatrial (SA) node?
The tongue is an example of this specialized form of skeletal muscle that is able to change shape without needing to be attached to bones.
What is a muscular hydrostat?
This muscle type contains peripherally located nuclei, and each cell is multinucleated.
What is skeletal muscle?
You may be seeing it in your dreams. This individual functional unit of skeletal muscle extends from Z-line to Z-line.
What is a sarcomere?
You'll be happy is you know that this neurotransmitter is an inhibitory neurotransmitter that causes relaxation of smooth muscle in the guy and vasculature.
What is nitric oxide?
Unlike in skeletal muscle, cardiac muscle has voltage gated calcium channels on this structure that help bring calcium into the cell for contraction to occur.
What is the plasma membrane?
During this type of contraction, the muscle maintains its tension by changes in length.
What is isotonic contraction?
This muscle type is the most plentiful muscle in the body.
Muscle fibers are made of many of these elongated protein strands that contain thick and thin filaments.
What is a myofibril?
In smooth muscle, this regulatory protein binds calcium which allows for the actin-myosin crossbridge to occur.
What is calmodulin?
In cardiac muscle, calcium plays not one but two roles in producing contraction.
What is an electrical and mechanical role?
This is the process by which contractile strength is increased by increasing the number of motor units that are stimulated.
What is spatial summation?