1 pts List the following events in order as they would occur inside a skeletal muscle fiber: 1) cross-bridge 2) action potential (AP) arrives at the motor end plate 3) AP travels down the t-tubule 4) calcium pumped into sarcoplasmic reticulum 5) opening of voltage-gated calcium channels O 2, 5, 4, 3, 1 O 5, 1, 2, 4, 3

Q: b. When the DHP receptor activates, the sarcoplasmic reticulum membrane becomes less perme to Ca2+…

A: Muscle contraction is a highly coordinated and complex process. it requires thick and thin filaments…

Q: In skeletal muscle contraction, calcium ions apparently act to:   Question 8 options:   a)  block…

A: In skeletal muscle contraction, the thin filaments are pulled which then slide past the thick…

Q: 34. in an experimental study of skeletal muscle function, an isolated muscle strip is electrically…

A: Muscle tension Muscle tension interchangeably called "muscle force" is the amount of force produced…

Q: f a muscle cell had very short T-tubules, how much tension would the muscle fiber create, relative…

A: T tubules or the transverse tubules are the extensions of the cell membrane that penetrate into the…

Q: 3. List five proteins of the myofilaments?

A: Myofilaments are the protein filaments of the myofibrils in muscle cells. These regulate contraction…

Q: 3) Paula is a scientist who is developing a drug called Fremtol that will be used to treat muscle…

A: ATP works as a cell energy currency and it helps the cell to rapidly accumulate energy and transfer…

Q: 13) skeletal muscle fibers contract because thick filaments slide over and between thin filaments…

A: Muscles are an important aspect of our bodies because they protect us and aid in movement. Because…

Q: Which neurodegerative disorder affects skeletal muscle stimulation? 1) Alzheimer's disease 2)…

A: Neurodegenerative disorders are disorders of the brain and nervous system. The disorders result in…

Q: f acetylcholinesterase is defective, or disabled, *

A: In each myofibril , actin thin filaments and myosin thick filaments are organized mainly into a…

Q: List five proteins of the myofilaments and describe their physical arrangement?

A: Muscles are the soft tissue found in our bodies. Muscles work to create strength and movement. They…

Q: 31) which of the following are included in a triad found in skeletal muscle? a) actin, myosin and…

A: Skeletal muscle is one of the three types of muscles found in the muscular system. The other two…

Q: Explain the difference between a single muscle fiber contraction and a skeletal muscle contraction…

A: When an Action Potential travels along the Nerves to the Muscles, a Muscle Contraction is triggered.…

Q: Which of these is the proper sequence of these events of muscle contraction 1) Action potential…

A: Based on option, the correct order is 1, 3, 4 and 2. Steps in initiating contraction: Whenever…

Q: The figure seen here represents which type of muscle fiber? a.) Type IIx- very fast, fatigable b.)…

A: The muscle fibers are multi-nucleated (exclusively in the case of skeletal muscle fibers),…

Q: What cellular changes could cause the skeletal muscle to become rigid?

A: Skeletal muscle cells do not relax or remain in a rigid state due to lack of ATP and so muscle…

Q: An increase in the cross sectional area of muscle is known as hypertrophy. Hypertrophy allows muscle…

A: The question given is about hypertrophy. Hypertrophy is defined as an increase in tissue mass caused…

Q: 18) Which of the following is NOT correct statement regarding muscle fatigue? A) Gradual increase in…

A: Hi! Thank you for the questions. As you have posted multiple questions, I will be answering the…

Q: 34- Which of the following sentences is incorrect: a- Muscle fibers and neurons are similar because…

A: there needs a correction in question part. it is saltatory conduction.

Q: Define sarcomere. Describe its components and its role in muscle contraction

A: A muscle usually contract together to produce a force. A muscle comprises of the fibers of muscle…

Q: Describe how each of the following factors influences motor unit recruitment: a) Increasing…

A: Alpha motor neurons (also called inferior motor neurons) don't have striated muscle and cause…

Q: 3. Explain the 5 steps in voluntary control of skeletal muscles.

A: The skeletal muscles are under the control of CNS and regulated voluntarily by the stimulation…

Q: Muscle spindles :-a- are found in all skeletal musclesb- are found only in large skeletal musclesc-…

A: Muscle spindles are sensory receptors that regulate the contraction of muscles by detecting change…

Q: 21. Summarize the events that occur during the Excluation-Contraction Coupling Phase in a skeletal…

A: Neurons are the cellular components of the nervous system that help in nerve impulse transmission.…

Q: In order to excite a skeletal muscle, the neurotransmitter must bind to: a)calcium channels. b)…

A: Neurotransmitters such as acetylcholine bind to receptors on the muscle surface and elicit a…

Q: dings forming a neuromuscular junction with a single muscle fiber. Membranes of axonal endings and…

A: Synspse is a structure that permits a neuron  to pass an electrical or chemical signal to another…

Q: Describe the effect of increasing the load on a skeletal muscle fiberon the velocity of shortening?

A: A skeletal muscle is a type of muscle that remains attached to the skeletal system i.e. bones in the…

Q: Put these events that occur in skeletal muscle in the correct chronological sequence: 1. Activation…

A: The membrane potential on the T-tubule membrane is sensed by a protein called the dihydropyridine…

Q: Describe four muscle proteins and their functions.

A: We can say that Muscle contraction can be described as the process occurring within the muscle…

Q: Compare and contrast isometric and isotonic muscle contractions. Describe muscle tone.

A: The muscular system is an essential part involved in the movement, protection and support of organs.…

Q: Z7

A: We know that Muscles are the soft tissue found in our body. Muscles work to create strength and…

Q: How is smooth muscle contraction affected by the drugs called calcium channel blockers?

A: Calcium ions move in and out of the cell with the help of calcium channels that present in cardiac…

Q: 2 T tubule 3. ATP 4. lateral sacs of the sarcoplasmic (c) supplies energy for the reticulum 5.…

A: Muscle contraction begins when the impulse arrives at a particular muscle which is going to be…

Q: the structures in the image below. Complete the table to describe the basic structure of a skeletal…

A: A Tendon:  tendon is a fibrous connective tissue which attaches muscle to bone. B Epimysium:  is the…

Q: 1. What progressive muscle relaxation performed in Two scenarios shown in the picture?

A: Introduction:- Muscles is soft tissues. Many stretching fibers make up muscles.humna body's have…

Q: Which of the following step(s) about the excitation of skeletal muscle is/are incorrect?   1.…

A: Muscle contraction is an example of a complex biological process. The excitation of skeletal muscle…

Q: Which of the following can respond to increased stimulation with a graded response: a) motoraxon…

A:

Q: Provide one difference and one similarity in the process of contraction of smooth, skeletal, and…

A: Muscles are divided into three categories: cardiac, smooth, and skeletal. Cardiac muscle is found in…

Q: Discuss the 5 steps involved in voluntary muscle contraction.

A: Skeletal muscles are known as the voluntary muscles of the body as they carry out the voluntary body…

Q: Z1

A: We can say that The muscular system comprises three major types of muscle cells - smooth muscle,…

Q: Skeletal muscle contraction is influenced by A) frequency of stimulation B) calcium release from the…

A: The muscular system allows body movements and maintains body posture. It includes skeletal, smooth,…

Q: Skeletal muscle fibres are very metabolically active and are adapted to create a lot of ATP from…

A: The purpose of this answer is to explore how the three different organ systems (respiratory,…

Q: Where would you expect to find the greatest concentration of calcium in resting skeletal muscle ?

A: The human and other vertebrates contain three important muscle types, such as skeletal muscle,…

Q: - The sacromere is: a- A functional unit of the skeletal muscle b- The area between two intercalated…

A: Muscle cells, commonly known as myocytes, are the cells that makeup muscle tissue. There are three…

Stress

Stress is defined as the feeling of being overwhelmed or unable to cope with emotional or mental pressure. Any event or action that makes a person annoyed, furious, or nervous can trigger it. Chemical changes in the body caused by stress can cause blood pressure, blood sugar levels, and heart rate to rise.