Podcast
Questions and Answers
Which of the following is NOT a functional property that distinguishes muscle tissue from other tissues?
Which of the following is NOT a functional property that distinguishes muscle tissue from other tissues?
- Contractility
- Secretion (correct)
- Conductivity
- Irritability
What are the layers of connective tissue that occur in and around skeletal muscle called?
What are the layers of connective tissue that occur in and around skeletal muscle called?
- Endomysium
- Perimysium (correct)
- Fascicles
- Epimysium
Which condition is characterized by muscle weakness and degeneration?
Which condition is characterized by muscle weakness and degeneration?
- Fibromyalgia
- Delayed-onset muscle soreness
- Muscular dystrophy (correct)
- Myofascial pain syndrome
What is the main purpose of muscle tissue's property of conductivity?
What is the main purpose of muscle tissue's property of conductivity?
In terms of muscle attachments, what is the point of attachment that moves during muscle contraction known as?
In terms of muscle attachments, what is the point of attachment that moves during muscle contraction known as?
What protein blocks the myosin binding sites on actin when the muscle is at rest?
What protein blocks the myosin binding sites on actin when the muscle is at rest?
Which protein changes its shape in response to rising calcium concentration, exposing the myosin binding sites on actin?
Which protein changes its shape in response to rising calcium concentration, exposing the myosin binding sites on actin?
In which type of contraction does the muscle shorten to do work?
In which type of contraction does the muscle shorten to do work?
Where does the nerve ending and muscle fiber meet in skeletal muscle tissue?
Where does the nerve ending and muscle fiber meet in skeletal muscle tissue?
What neurotransmitter is released into the synaptic cleft from the nerve terminal?
What neurotransmitter is released into the synaptic cleft from the nerve terminal?
What role does calcium play in muscle contraction?
What role does calcium play in muscle contraction?
What is the function of the sarcoplasmic reticulum in skeletal muscle tissue?
What is the function of the sarcoplasmic reticulum in skeletal muscle tissue?
What are terminal cisterns in skeletal muscle tissue?
What are terminal cisterns in skeletal muscle tissue?
What is the role of T tubules in muscle fibers?
What is the role of T tubules in muscle fibers?
How are calcium ions involved in skeletal muscle contraction?
How are calcium ions involved in skeletal muscle contraction?
What is the relationship between T tubules and the sarcolemma in muscle fibers?
What is the relationship between T tubules and the sarcolemma in muscle fibers?
What is the functional requirement for myosin to interact with actin in a sarcomere?
What is the functional requirement for myosin to interact with actin in a sarcomere?
What is the main cause of delayed-onset muscle soreness?
What is the main cause of delayed-onset muscle soreness?
How is fibromyalgia diagnosed based on pain location?
How is fibromyalgia diagnosed based on pain location?
What type of exercise can help speed up recovery from delayed-onset muscle soreness?
What type of exercise can help speed up recovery from delayed-onset muscle soreness?
Which treatment is commonly used for fibromyalgia management?
Which treatment is commonly used for fibromyalgia management?
What is the role of NSAIDS in managing overused or strained postural muscles?
What is the role of NSAIDS in managing overused or strained postural muscles?
What is the primary tissue in the heart?
What is the primary tissue in the heart?
Which type of muscle tissue helps in squeezing fluids through hollow organs?
Which type of muscle tissue helps in squeezing fluids through hollow organs?
What is responsible for shortening muscle cells?
What is responsible for shortening muscle cells?
What prefix means 'muscle'?
What prefix means 'muscle'?
Which type of muscle tissue is striated and voluntary?
Which type of muscle tissue is striated and voluntary?
What is the function of sphincter muscles in the body?
What is the function of sphincter muscles in the body?
What is the prefix that means 'flesh'?
What is the prefix that means 'flesh'?
'Fusiform' appearance is characteristic of which type of muscle tissue?
'Fusiform' appearance is characteristic of which type of muscle tissue?
Which sheath of connective tissue wraps each muscle fiber (cell)?
Which sheath of connective tissue wraps each muscle fiber (cell)?
What is the purpose of nerves and blood vessels in skeletal muscles?
What is the purpose of nerves and blood vessels in skeletal muscles?
Study Notes
Muscle Tissue Characteristics
- Conductivity is not a functional property that distinguishes muscle tissue from other tissues.
Skeletal Muscle Structure
- Layers of connective tissue in and around skeletal muscle are called epimysium, perimysium, and endomysium.
- The point of attachment that moves during muscle contraction is called the insertion.
Muscle Physiology
- Muscle weakness and degeneration are characteristics of muscular dystrophy.
- The main purpose of muscle tissue's property of conductivity is to allow rapid transmission of electrical impulses.
- During contraction, the muscle shortens to do work in isotonic contractions.
Muscle Contraction Mechanism
- Troponin blocks the myosin binding sites on actin when the muscle is at rest.
- Tropomyosin changes its shape in response to rising calcium concentration, exposing the myosin binding sites on actin.
- The nerve ending and muscle fiber meet at the neuromuscular junction.
Neurotransmission
- Acetylcholine is released into the synaptic cleft from the nerve terminal.
Calcium's Role
- Calcium is involved in muscle contraction by removing the blocking action of troponin and tropomyosin.
- Calcium ions bind to troponin, causing a conformational change that exposes the myosin binding sites on actin.
Sarcoplasmic Reticulum and T-Tubules
- The sarcoplasmic reticulum is a type of smooth endoplasmic reticulum that stores calcium ions.
- Terminal cisterns are specialized regions of the sarcoplasmic reticulum that store calcium ions.
- T-tubules (transverse tubules) are invaginations of the sarcolemma that allow rapid transmission of electrical impulses.
Muscle Function and Disease
- Delayed-onset muscle soreness (DOMS) is caused by micro-tears in muscle fibers.
- Fibromyalgia is diagnosed based on widespread pain in specific locations.
- Exercise can help speed up recovery from DOMS.
- Fibromyalgia is commonly managed with medication, including NSAIDs.
- NSAIDs are used to manage overused or strained postural muscles.
Muscle Types and Functions
- The primary tissue in the heart is cardiac muscle.
- Smooth muscle tissue helps in squeezing fluids through hollow organs.
- Actin and myosin filaments are responsible for shortening muscle cells.
- The prefix "myo-" means 'muscle'.
- Skeletal muscle tissue is striated and voluntary.
- Sphincter muscles control the opening and closing of hollow organs.
- The prefix "sarco-" means 'flesh'.
- Smooth muscle tissue has a fusiform appearance.
- Each muscle fiber is wrapped in a sheath of connective tissue called the epimysium.
- Nerves and blood vessels in skeletal muscles provide innervation and oxygenation.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
Learn about the microscopic structure of skeletal muscle tissue, focusing on the sarcoplasmic reticulum (SR) and its role in muscle contraction. Understand how calcium ions and terminal cisterns are involved in the sliding filament mechanism.
