The botulism toxin binds to which structure in the human body? The botulism toxin binds to the axon terminal, truly the cytoplasmic membrane of the neuron. O The botulism toxin binds to the sarcoplasmic recticulum preventing the release of calcium. The botulism toxin binds to the cytoplasmic membrane of the muscle cell. The botulism toxin binds to the synaptic vessicles preventing the release of acetylcholine.
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- The movement of sodium ions and potassium ions in opposite directions across the plasma membrane of a nerve cell, using the hydrolysis of ATP for energy, is an example of: antiport movement uniport movement symport movement all of the above none of the abovePositive feedback loops are used in chemical messaging in the body. Below is a list of steps that describe how a positive feedback system works in chemical messaging. The list is out of order. Placed the list in the proper order. 1. A sensor in a persons finger senses a change in the bloodstream. 2. The chemical messenger triggers the production of a specialized protein in the finger in response to the original signal. 3. A chemical messenger is released from the brain and travels to the finger. 4. As the specialized protein is made in the finger, it triggers the production of even more specialized protein. 5. The brain determines that conditions are no longer in homeostasis.please just true or false 1-Simple columnar absorption, secretion and move mucus by cilia. 2-Bacterium is cell. 3-All hormones are secreted inside the body, therefor its do not like the saliva. 4-Organisms differ from one to another but all are made up of one cell. 5-Action potentials normally travel from the axon terminal toward the cell body
- Which of the following stimulus or stimuli may cause protein channels involved in membrane transport to open or close: Change of voltage across the membrane. Mechanical stress. Ligand binding. All of the above. None of the above.Figures 4 and 5 are images of osteoblasts obtained with Transmission Electron Microscopy (TEM) which allows much higher magnification than light microscopy. TEM allows us to see organelles other than the nucleus. In the cytoplasm of these osteoblasts, there appear to be two different types of organelles based on shape differences. Point out 2 different types/shapes of organelles on the figures 4 and 5. Based on their shapes and on the specific function of this type of cell, identify the organelles of figures 4 and 5.Transmission of electrical signals in nerve and muscle cell is mediated by opening and closing of: 1) ion channels in the nuclear envelope 2) ion channels in the plasma membrane 3) the electron transport chain 4) the sodium potassium ATPase in the plasma membrane
- You're hiking, you step on a piece of wood and a protruding rusty nail goes right through your Puma Cydes and into your foot. You start thinking....when was my last tetanus booster shot??? We're not talking about tetanus as defined in our studies of muscle physiology, but pathological tetanus (also known as "lockjaw"). In this condition, bacteria called Clostridia tetani (found in dirt) enter the bloodstream and grow, producing tetanus neurotoxin. The result of this toxin coursing through your bloodstream is causes the prime mover and its antagonist muscle groups (doesn't just have to be muscles of the jaw) to contract at the same time. How does the neurotoxin do that? Knowing all this, and being experts on Human reflex Physiology, do you think your reflexes (like the knee-jerk) would still function if you were suffering from "lock-jaw?"Which of the following statements regarding skeletal muscle is NOT true? Skeletal muscle is responsible for overall body motility. Skeletal muscle can contract rapidly and can maintain the contraction for long periods of activity .Skeletal muscle can exert tremendous power. Skeletal muscle is called voluntary muscle because it is the only type subject to conscious control.The protein collagen is manufactured and secreted by skin cells. Collagen provides strength and elasticity between cells. What would be the result if during the manufacture of collagen, there was a defect in its ER signal? (Select all) Question 8 options: The primary structure would never get completed. The primary structure would get completed but the secondary and tertiary structures would not be completed. The malformed collagen would end up exiting the cell. The malformed collagen would end up in the cytoplasm. The malformed collagen would end up in a vesicle.
- The working part of the muscle is called A. Head B. Belly C. Tendon D. Aponeurosis What are the microbes called which colonize our bodies and actually help us to survive by aiding digestion or guarding against infection. pathogens normal flora vectors fomitesThe following has receptors for the substance on their plasma membranes to produce signal for growthWhich of the basic life processes—metabolism, responsiveness, movement, growth, differentiation, and reproduction, is referred to by the following descriptions? 1. For animals with three germ layers, the mesoderm forms skeletal muscle, bone, connective tissue, the heart, and the urogenital system. 2. Putting strain on the muscles through working out results in an increase in muscle fibers.Having more muscle fibers will lead to greater strength and muscle size.