46. The smooth sustained contraction that is a result of a high frequency of stimulation is:…
* 3rd class levers: most common; effort is between the fulcrum and the load; i.e. flexor of our elbow…
3. Answer the questions below. You may use your text and any other resources you wish, please be sure to cite your sources! Submit your answers as a word document to the week 3 dropbox.…
The skeletal framework of the body is composed of at least 206 bones and the associated tendons, ligaments, and cartilages. The skeletal system has a variety of important functions, including, the support of soft tissues, blood cell production, mineral/electrolyte and lipid storage, and, through its relationships with the muscular system, the support and movement of the body as a whole. Skeletal system disorders can thus affect many other systems. The skeletal system is in turn influenced by the activities of other systems. For example, weakness or paralysis of skeletal muscles will lead to a weakening of the associated bones and may cause changes in their relative positions.…
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…
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.…
The skeleton is basically the structure of the body and keeps your internal organs in place.…
What is the voltage beyond which there were no further increases in active force? Maximal voltage: 8.5 V…
The latent period is the first stage of a muscle twitching. It is the time that elapses between the stimulus and its response.…
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.…
Please provide an example of Homeostasis and Negative Feedback in our environment. Be sure not to duplicate a classmates' answer.…
Firstly, the skeletal system is the basic frame of our body and it consists of 206 bones which are all connected by a number…