D) Question 6 B. Increasine freauency of stimulation Using the Myogram above, what does line C represent? O Contractile period O Latent period O Summation Residual force O Tidal volume O Tetanus O Lag time Fatigue electromyography Relaxation period

Q: 5- Cardiac muscle is striated un branched O True False

A: Cardiac muscle is a striated muscle tissue that only exists in the heart and is important for the…

Q: This patient was given potassium ions intravenously and regained normal muscle functioning in a very…

A: Potassium is a mineral, our body cells need this, it regulates our major body parts functions such…

Q: condi

A: Cardiac muscles can be defined as the group of involuntary muscles present in the heart. These…

Q: 3. Cardio and smooth muscle types are involuntary. Skeletal muscle types are, A. Mandatory B.…

A: Muscles are of two types voluntary and involuntary muscles.

Q: List five proteins of the myofilaments

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

Q: Why is Excitation Contraction Coupling important?

A: Muscles contraction  The contraction of muscle activated by the tension generating sites present in…

Q: An extensor mechanism injury may be characterized by

A: The extensor mechanism extends the tibiofemoral joint. The quadriceps muscle group, quadriceps…

Q: Draw a labeled cardiac muscle action potential.

A: Introduction: A cardiac muscle action potential is a brief change in voltage across the cell…

Q: Explain why it is important for cardiac muscle to havelonger-lasting contractions than skeletal…

A: The muscular system consists of three types of muscle-smooth muscle, cardiac muscle and skeletal…

Q: What does calcium ion do in the excitation contraction coupling period? What step in the process…

A: Excitation contraction coupling It is defined as the mechanism that associates the plasma membrane…

Q: Match each substance with its role in muscle contraction.

A: Muscle contraction is a major phenomenon associated with the functioning of the myofibril occurring…

Q: Motor neuron 4 Muscle fiber nucleus Myofibril of muscle fiber Figure 10.15. Details of the…

A: A neuromuscular junction is the region of chemical interaction between the axon terminal of neurons…

Q: A (low or high frequency) of action potentials results in the fusion of muscle twitches to produce…

A: A muscle twitch is defined as the involuntary contraction of the muscle fibers. Muscle fibers are…

Q: oxygen Fatigue faster and are best suited for activities requiring shorts bursts of power and energy…

A: Fast twitch muscles are optimized for  intense activities, such as: sprinting. powerlifting.…

Q: atent phase V [ Choose ] Active return of Ca2+ into SR Ca2+ released from SR Power stroke of…

A: Alpha motor neurons are the neurons which  innervate the skeletal muscle fibers. On entering a…

Q: Label different areas of an individual muscle unit known as a sarcomere below: Actin A Band Mline Z…

A: The sarcomere is the contraction unit in the skeletal muscles that are under the control of motor…

Q: What is NOT related to temporal summation for muscle contraction? residual Ca2+ in the muscle…

A: Temporal summation of muscle contraction can be described as a sensory summation involving the…

Q: Fill in the blank:  The P wave corresponds to depolarization of the muscle fibers of the…

A: A human heart is 4 chambered mascular organ. Its present inside chest and its similar to a fist in…

Q: Choose the correct answer: Myofibrillar protein content from total muscle protein is Select one: 5%…

A: Myofibrillar proteins include thick and thin filaments. Thick filament is mainly composed of myosin…

Q: Fasciculations of lower motor neuron lesions :-a- are caused by injury currents initiated in the…

A: The brain is the most important part of the body that controls every action in our body. It is a…

Q: The EMG is a recording of: * The action potentials of the motor nerves supplying the muscle fibers.…

A: Introduction: Action potential is a short-lasting event in which the electrical membrane potential…

Q: Which of the following is NOT TRUE of the neuromuscular junction? O presynaptic calcium influx…

A: Calcium ions activate the exocytosis of the synaptic vesicle which contains neurotransmitters and it…

Q: differentiate the dihydropyridine receptor from ryanodine receptor.

A: Di-hydropyridine receptor-

Q: Does the EMG represents the AP of the muscle or the AP reached to the muscle by the nerve ? AP of…

A: The EMG is briefed as electromyography and is a biomedical signal. It measures the action…

Q: In skeletal muscle, as the wave of travels along the sarcolemma, that opens it propagates the…

A: These are the electrical signals that travel in neuron sarcolemma and trigger muscle contraction.

Q: QUESTION 15 What section of a sarcomere does not shorten during muscle contraction? Al Al Z disk…

A: INTRODUCTION Sarcomere It is a part of a striated muscle, which is a functional unit and works in…

Q: When compared to normal muscle, the response of the denervated muscle to electrical stimulation…

A: Normal muscle fibers appear polygonal in shape whereas denervated muscle appears angular and…

Q: Refer to the electromyogram (EMG). Select the correct statements. motor unit motor uniti motor unit…

A: the co-present and complementary mechanisms are used to achieve graded will increase within the…

Q: Correctly order the steps of excitation contraction coupling for a muscle fiber. 1. 2. 3. 4. 5. 6.

A: The human body is a plethora of fascination. There are different organ systems that function in the…

Q: The first heart sound is due to the: closing of the atrioventricular valves O closing of the…

A: Heart,  is the main organ of circulatory system in vertebrates, It is located on the ventral side of…

Q: Why is the increase in velocity inversely proportional to the sarcomere length?

A: A sarcomere is the basic contractile unit of muscle fiber. Each sarcomere is composed of two main…

Q: Does the EMG represents the AP of the muscle or the AP reached to the muscle by the nerve ? O AP of…

A: It measures the action potential(AP) or electrical activity generated. EMG signals acquired do…

Q: Fill in the blank:  The T wave corresponds to repolarization of the muscle fibers of the…

A: Step 1 Repolarization takes place when the membrane potential returns to a negative value.…

Q: What false about Henneman's size principle? Select one: a. The relative change in force remains…

A: Skeletal muscle is formed of various types of fibres . It includes :- A ) Type I muscle fibres B )…

Q: Describe how an action potential triggers muscle contraction. Know the specific molecules involved,…

A: A muscle contraction means a reduction in the length of the muscle or an increase in tension. A…

Q: How does varying the frequency effect contraction force? Which interval caused the greatest…

A: * contractions is of three types mainly Isotonic  Eccentric Concentric *Concentric contractions…