46. The smooth sustained contraction that is a result of a high frequency of stimulation is:…
The potential energy in ATP is released when the terminal high-energy bond is broken by a process called _hydrolysis________________________.…
Muscular System: The muscular systems is responsible for maintaining posture, circulating blood, and movement. Visceral muscle is found inside of organs like the stomach, intestines, and blood vessels. The stomach secretes acid and enzymes that digest food. The muscular system also has another variant which is skeletal muscle. The skeletal muscles are attached to bones and move various parts of the body. The biceps, pectoralis major, triceps, nasalis, and deltoid are five major organs in the muscular system. The biceps main job is to control the movement of the elbow and shoulder. The pectoralis major make up most of the chest bulk. The triceps help extend and retract the forearm. The nasalis compress nasal cartilage. The deltoid is responsible…
Pectorals, triceps, biceps and deltoids. These muscles are located in your shoulders, arms and thorax.…
Section I – Multiple choice: (65 points; 2.5 points each). Bubble your answers on your scantron.…
Skeletal muscle is under voluntary control. Nerve impulses that originate in the central nervous system cause muscles to contract. Both neurons and muscle tissue conduct electrical current by moving ions across cellular membranes. A motor neuron ends in a synapse with a muscle fiber. The neuron releases acetylcholine and transfers the action potential to the muscle tissue. The signal will travel through the tissue and trigger the contraction of individual sarcomeres. One synapse generally controls an entire muscle fiber. One motor neuron usually controls several adjacent muscle fibers. A group of fibers under the control of a single motor neuron is known as a motor unit.…
What is the voltage beyond which there were no further increases in active force? Maximal voltage: 8.5 V…
Human skeletal muscle consists of hundreds of individual cylindrically shaped cells (called fibers or myofibers) bound together by connective tissue. In the body, these muscles are stimulated to contract by somatic motor nerves that carry signals in the form of nerve impulses from the brain or spinal cord…
The Muscular System: Skeletal Muscle Tissue 1. Fill in the characteristics of the three muscle types: |Muscle Type |Cardiac |Skeletal |Smooth | |Shape of cell |Branching Cell |Elongated Cell |Spindle Shaped Cell | |# of nuclei |Single Central Nucleus |Multiple Peripheral Nuclei |Single Central Nucleus | |Striations |Visible |Visible |Lack of Visible | |Control |Involuntary |Voluntary |Involuntary | 2. What attaches muscles to bone?…
1. Define a motor neuron:_____A single nerve cell that branches from the brain or the spinal cord to a muscle or a gland.…
Great job once again on answering the question about how muscle action relates to the movement. I think maybe I took it to the extreme, I went on about agonist, synergist, and antagonist muscles. I wasn 't sure if I should add the levers too. It appears as though you explained every type of muscle movement and gave an example of each. I went into flexion at the elbow and discussed that the agonist is the main muscle mover, the antagonist does the opposite, and the synergist is the helper. However, if you think about it, we kind of still came up with the same answer. You discussed flexion and extension and how they are opposites. That is what I wrote except I said that the agonist, or the main muscle, is used for flexion, while the antagonist is used for extension. You noted that these were opposites and so did I.…
Please provide an example of Homeostasis and Negative Feedback in our environment. Be sure not to duplicate a classmates' answer.…
Which lower extremity muscles are utilized during standing and walking? They are your Quadriceps they are the biggest muscles by far they are at the front of the thighs. They raise the thigh and leg. Then there are the Hamstrings these form the back of the thighs and move the leg backward. The Buttocks powerful and bulky complete the backward movement of the step. Stomach muscles contract with each step forward. The Calf is smaller but is the most heavily used muscle when you take a step. There are also secondary that are used and they are: The Pelvis’s Stabilizing these form a muscular crown around the pelvis. Symmetrical Tibialis Anterior muscles are in the front of the calf muscle raises the foot so it doesn’t scrap the ground as you take a stride.…
The results highlighted the positive improvements from pre-training to post-training for both groups in all the dependent variables. When it came to comparing the gain scores between each group, there was no significant difference between the hang snatch and hang clean. The analysis investigates the outcomes of two movement variations of weightlifting dealing with power, strength, and speed. The results proved the hypothesis that both hang cleans and hang snatches had equal effectiveness in improving vertical jump, 1RM back squat, and 40-yeard sprint. Also with expert opinion and biomechanical observations, the results state that both lifts performed over a short term with the same relative loads, offer similar potential for significant improvements in strength, speed and power in female collegiate…
1. There is a greatr concentration of Na+ f ; there is a greater concentration of K+ e .…