Muscle & Nervous tissue Flashcards
(24 cards)
Muscle tissues function?
They use energy from the hydrolysis of ATP to generate force. The contractions these tissue cause generate heat produces body movements and maintains posture
Name the three kinds of muscle tissues
Skeletal, cardiac and smooth muscle
How many skeletel muscles in the body
650
Skeletel muscles are attatched to what?
Bones via tendons
Skeletel fibres areโฆ
Cylindrical
The smallest skeletel muscle isโฆ
1.25mm and is stapedius
The largest skeletel muscle isโฆ
60 cm and is sartorius
A band is made up ofโฆ
All thick filaments
I band is made up ofโฆ
Thin filaments, no thick filaments
H zone is made up ofโฆ
Thin filaments, no thick filaments
The M line isโฆ
In the middle of the sarcome and holds thick filaments together
Z disc is made up ofโฆ
Actinins that link filaments of the adjacent sarcomes
How are cardiac muscles linked?
Through intercalculated discs which are a special junction
Where are cardiac muscles located?
In the heart
Where are skeletel muscles located?
All through the body
Where are smooth muscles locted?
In the walls of hollow structures like intestines or blood vessels walls
Nervous tissue function?
Maintain homeostasis, Initiates voluntary movements
and is responsible for perception, behaviour and memory
Three major activity functions of nervous tissue?
Sensory, Integrative and Motor
What are the two types of cells that make up nervous tissue?
Neurons and neroglia
Name the shapes a neuron can take onโฆ
There is the multipolar neuron, the bipolar neuron, the unipolar neuron and the anaxonic neuron
A neurons cell body hasโฆ
Branched dendrites convey nerve impulses (action potentials) and from which a longer, single axon conducts nerve impulses to another neuron or tissue
Neuroglia function?
They make up physical structure and can repair the framework of the nervous tissue and are a nutrient supply for neurons they also regulate intersitial fluid in neural tissue
The classification of types of neuroglia in the CNS isโฆ
Astrocytes, oligodendrocytes, microglia and the ependymal cell
The classification of types of neuroglia in the PNS isโฆ
Schwann cells and satellite cells
