Is smooth muscle tissue striated or nonstriated?
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Nonstriated.
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Is smooth muscle tissue striated or nonstriated?
Nonstriated.
What is the repair ability of cardiac muscle tissue?
Limited ability for repair.
What are the two main types of cells in nervous tissue?
Neurons and glial cells.
What is the nature of skeletal muscle in terms of control?
It is striated and voluntary.
What shape are the cells in smooth muscle tissue?
Small, spindle-shaped cells.
What are the two stages of tissue response to injury?
Where is nervous tissue primarily concentrated?
In the brain and spinal cord.
What is fibrosis?
Replacing damaged tissue with fibrous tissue, which does not restore normal function.
How does aging relate to cancer incidence?
Cancer rates increase with age.
What is the primary function of nervous tissue?
Specialized for conducting electrical impulses.
Which types of tissues regenerate poorly?
Skeletal muscle, cardiac muscle, and nervous tissues.
How are new muscle fibers produced in skeletal muscle tissue?
By divisions of myosatellite cells (muscle stem cells).
What structures connect cardiac muscle cells?
Intercalated discs.
What role do neuroglia (glial cells) play in nervous tissue?
They serve as supporting cells.
What role do neurons play in nervous tissue?
They are responsible for transmitting nerve impulses.
Is cardiac muscle voluntary or involuntary?
Involuntary.
How do neurons communicate with each other?
Through synapses using neurotransmitters.
Where is cardiac muscle found?
Only in the heart.
What percentage of cancers are caused by chemical exposure and environmental factors?
70 – 80%.
What can trigger inflammation?
Trauma (physical injury) or infection (the presence of pathogens).
What is a key characteristic of the nucleus in smooth muscle cells?
It is centrally located.
What are dendrites?
Short branches extending from the cell body that receive incoming signals.
What is the function of glial cells?
To support and protect neurons.
What is an abscess?
Accumulation of pus (debris, fluids, and dying cells).
What is a common consequence of aging related to bruising?
Increased bruising occurs.
What percentage of people in the United States develop cancer?
25%.
What is the goal of regeneration in tissue response?
To restore normal function.
What do damaged cells release to activate mast cells?
Prostaglandins, proteins, and potassium ions.
Can smooth muscle cells divide and regenerate?
Yes, they can divide and regenerate.
How do neurons communicate with each other?
Through synapses using neurotransmitters.
What is the function of skeletal muscle?
Responsible for body movement.
Which tissues have a high capacity for regeneration?
Liver and skin tissues.
What is the ability of tissues to repair and regenerate?
It varies among different types of tissues.
What components are found in intercalated discs?
Proteoglycans, desmosomes, and gap junctions.
What is the function of the cell body in a neuron?
It contains the nucleus, nucleolus, and organelles.
What is necrosis?
Tissue death.
What is the primary function of the axon?
To carry outgoing electrical signals to other cells.
What is the difference between regeneration and repair?
Regeneration restores the original tissue, while repair may result in scar tissue.
Which types of tissues regenerate well?
Epithelia, connective tissues (except cartilage), and smooth muscle.
Is cardiac muscle striated or non-striated?
Striated.
What are the main signs of inflammation?
Redness, heat, swelling, pain, and loss of function.
What is tissue regeneration?
The process by which the body replaces damaged or lost tissue.
How does aging affect the structure of tissues?
Tissue becomes thinner and more fragile.
What is the purpose of the inflammatory response?
To prevent infection and clear debris.
What are the two main types of cells in nervous tissue?
Neurons and neuroglia (glial cells).
What happens to damaged cardiac muscle cells?
They are replaced by fibrous tissue.
What role do neurons play in the nervous system?
They are responsible for transmitting nerve impulses.
What is inflammation?
A biological response to harmful stimuli, such as pathogens or damaged cells.
What are the three types of muscle tissue?
Skeletal muscle, cardiac muscle, and smooth muscle.
What factors can influence tissue regeneration?
Age, overall health, and the type of tissue involved.
What is the primary cause of 40% of cancers?
Cigarette smoke.
What is the primary function of nervous tissue?
To transmit electrical signals throughout the body.
What do mast cells release to stimulate the inflammatory response?
Chemicals.
What is muscle tissue specialized for?
Contraction and movement.
What is the significance of myelin in nervous tissue?
It insulates axons and increases the speed of nerve impulse transmission.
What happens to the rate of energy consumption in tissues as one ages?
The rate of energy consumption in tissues decreases.
What type of cells make up skeletal muscle tissue?
Long, thin, multinucleate cells called muscle fibers.
What type of muscle tissue is characterized by shorter, branched cells?
Cardiac muscle tissue.
What is the primary function of nervous tissue?
To transmit electrical signals throughout the body.
What are the two main types of cells in nervous tissue?
Neurons and glial cells.
What role do lysosomal enzymes from immune cells play in tissue response?
They destroy injured cells, pathogens, and may damage surrounding tissues.
Is smooth muscle tissue voluntary or involuntary?
Involuntary.
What role do white blood cells play in inflammation?
They help to fight infection and initiate the healing process.
What is the axon in a neuron?
A long, thin process that carries outgoing electrical signals to other cells.
What hormonal changes occur due to aging?
Aging results in hormonal changes.
What accumulates in tissues as a result of aging?
Damage accumulates in tissues.
What is the function of glial cells?
To support and protect neurons.
What is the significance of myelin in nervous tissue?
It insulates axons and increases the speed of nerve impulse transmission.
Where is smooth muscle located?
In the walls of hollow, contracting organs.
How does aging affect the speed and effectiveness of tissue regeneration?
The speed and effectiveness of tissue regeneration decrease.
What role do dendrites play in neuronal function?
They receive incoming signals.
How does aging affect tissue repair and maintenance?
Aging slows repair and maintenance activities.
What is scar tissue?
Fibrous tissue that replaces normal tissue after injury.
