Overview Snake venom is the poison fluid normally secreted by venomous snakes when biting. It is produced in the glands‚ and injected by the fangs. Snake venom is used to immobilize and/or kill prey‚ and used secondarily in defence. It is a clear‚ viscous fluid of amber or straw colour. There are two main types of venom produced by snakes‚ containing primarily either: *Neurotoxins - these attack the nervous system. *Hemotoxins - these attack the circulatory system. While most snakes’ venom contains
Free Action potential Muscle Snake
The Tired Swimmer Case Study Go to this Website: http://www.sciencecases.org/tired_swimmer/tired_swimmer.asp Answer the Following Questions for Parts IIV. Part I: 1. What vital signs or symptoms does Annie exhibit? Fatigue‚ blurred vision‚ eye strain‚ shortness of breath‚ loss of control over muscles 2. Can you see any common features in Annie’s signs and symptoms? All relate to nervous system 3. Why is Annie having problems breathing? She was walking up flights of stairs 4. What
Premium Acetylcholine Action potential Neuron
level relating signs‚ symptoms and initial collaborative management in relation to the case study outlined in appendix one. Organophosphate poisoning essentially affects transmission of impulses at the neuromuscular junction (Porth‚ 2002). Transmission of impulses at the neuromuscular junction is mediated by the release of the neurotransmitter actycholine at pre- and post ganglionic parasympathetic‚ and pre- ganglionic sympathetic and somatic nerves (Murray‚ Daly‚ Little‚ Cadogan‚ 2007). Acetylcholine
Premium Acetylcholine
Viany Reyes November 08‚ 2011 Dr. Dunaway Neuronal signaling in muscle contraction is triggered when an action potential reaches the neuromuscular junction. At this junction‚ acetylcholine (ACh) is the main neurotransmitter. Packaged in vesicles‚ ACh fuses with the neuron’s membrane and is released into the synaptic cleft. ACh diffuses toward the motor end plate and bind to the neurotransmitter receptor on it. The muscle fiber is then triggered to produce an action potential of its own
Premium Neuron Action potential Muscle
of axon depolarization to individual muscle fibers via motor units. Each motor unit has so many number of motor nerves that extend to individual muscle fibers by way of a neuromuscular junction called the synapse. When the motor nerve is depolarized‚ acetylcholine is released from the axon terminals at the neuromuscular junction. . The acetylcholine binds to the receptor sites on the motor end plate membrane. The neurotransmitter‚ acetylcholine‚ increases the motor end plate’s permeability to
Premium Brain Retina Eye
-Understand the difference between Sarcolemma and T-tubules -Know the difference between thick and thin filaments (actin vs. myosin) -Know all the components of a sarcomere ( each band‚ zone‚ & line) -Understand the neuromuscular junction and the components of the neuromuscular junction (synaptic knob‚ motor end plate‚ synaptic cleft) -Know what happens at each physiological event of muscle contraction. (understand what occurs at each event) -Know the difference between repolarization vs depolarization
Premium Muscle Skeletal muscle Muscle contraction
Question: A patient is admitted for electroconvulsive treatment (ECT). The physician orders the neuromuscular blocking agent metocurine iodide (metubine) to reduce trauma by relaxing skeletal muscles. Explain the process of muscle contraction and how a neuromuscular blocking agent‚ such as metubine‚ would interfere with muscle contraction. Aaron arrived at the hospital with the following symptoms: drooping eyelids; fatigue and weakness of his muscles; and difficulty talking‚ breathing and swallowing
Premium Acetylcholine Muscular system Skeletal muscle
Calcium in the diet of a teenager is actively absorbed in the small intestine and transferred into the intestinal capillaries. Describe the route this calcium would follow to end up in the upper arm. Describe in detail the role of calcium at the neuromuscular junction as well as its role in the mechanism of muscle contraction and relaxation of the triceps. Considering the function of calcium in bone growth‚ explain in detail how the humerus would grow in length. Calcium in the diet of a teenager is absorbed
Premium Heart
Chapter 9: Muscles and Muscle Tissue‚ Lecture Outline: I. Overview of Muscle Tissues (pp. 276–278; Table 9.1) A. Types of Muscle Tissue (p. 277; Table 9.1) 1. Skeletal muscle is associated with the bony skeleton and consists of large cells that bear striations and are under voluntary control. 2. Cardiac muscle occurs only in the heart and consists of small cells that are striated and under involuntary control. 3. Smooth muscle is found in the walls of hollow organs and
Premium Muscle Myosin Muscle contraction
Drugs and the nervous system Neurotransmitters within the body include excitatory and inhibitory‚ noradrenalin‚ dopamine‚ serotonin; acetylcholine and glutamate are examples of excitatory neurotransmitters. GABA and glycine are examples of inhibitory neurotransmitters. General anaesthetics General anaesthetics act mainly on the central nervous system to stop information processing; these may be given by inhalation or intravenously. Nitrous oxide or laughing gas is used in maintain anaesthesia
Premium Neurotransmitter Action potential Nervous system