form a lining between the body wall and internal organs.
examples: parietal layer next to body wall, visceral layer next to organs
or skin, covers the outside of the body away from cavities.
Muscle _______ is present wherever the body needs to generate _____. It ______ the body, ______ posture, and ________ heat.
tissue, force, moves, maintains, generates
Each kind of muscle tissue uses at least two cytockeletal proteins to generate force. These are :
Myosin and actinactin is the same protein that we saw as microfilaments in the cytoskeleton
What are the three main types of Muscle Tissue?
Skeletal muscle alsoe called voluntary muscle
Skeletal Muscle/ voluntary muscle
it is under our voluntary controll (that is, we "choose" to use it to generate forces)
a type of striated muscle and it appears to be stripped or straited if we look at it under a microscope
Made up of muscle cells that have fused to form a long, thin tube or myofiber called a syncytium (joined cells), with mutiple nuclei visible on the out side of the muscle fiber.
also has a striated appearance like skeletal muscle
The fibers are joined in branches
found only in the heart
not under volentqry control
not under voluntary control
Example: the gut tube is lined with smooth muscle tohat keeps digestion proceeding from the mouth to anus. also arteries
There are single cells each with one nucleus
the cytoskeleton is arranged ina random fashoion sto that it does not have a striated apperance
True or False: Nervous tissue manipulates information.
One group of nerv cells (neurons) recieve...
sensory information from energy in the environment.
True or false: the vast majority of the estimated 100 billion nerons in the human nervous system are information procession neurons.
Another neuronal group _________ information to muscle or glandular tissue that makes up the _______ ______ of the body (that is they _______ some sort of output, either the _______ of a muscle or the _______ of a gland.
Individual neurons carry out these three funcitons:
They recieve, process, and transmit informationthey are aided by glial cells, which carry out structural and nutritional support of the nourvous system.
Together, _______ and ______ tissue are call excitible tissue. This is because, by _________ the flow of eledtrical charge, they can produce _____ _________ and other uniqe electrical events inside the cell.
muscle, nerve, manipulating, action potentials
Only tissue in the body that can manipurlate electrical charges to recieve, process and transmit information
-Muscle cells manipulate charges but conract and dont send information
-all other tissues have electrical charges but most can't conrol them