You accidentally place your hand on a hot surface. You immediately pull your hand away and then feel the burning sensation and pain from the burn you just received. Explain why, based on the structure of the nervous system, it takes longer to feel the pain than it does to move your hand away from the dangerous stimulus
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You accidentally place your hand on a hot surface. You immediately pull your hand away and then feel the burning sensation and pain from the burn you just received.
Explain why, based on the structure of the nervous system, it takes longer to feel the pain than it does to move your hand away from the dangerous stimulus
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Solved in 2 steps
- A pin can be pressed against the skin lightly and elicit no response from the pain receptor. However, if the pin is jabbed into the finger, the pain receptor may be stimulated and the finger would quickly be withdrawn through a reflex arc. Use what you know about threshold potential and the all-or-none principle to explain different levels of sensation (light touch or pain)In the following diagram, "First Pain" represents activity of "Second Pain" represents activity of , fibres, whereas fibres. Second pain First pain Pain intensity Time A-delta & A-alpha A-delta & A-beta; C A-alpha; A-beta A-beta & A-alpha; C O C; A-delta & A-betaThe conscious perception of pain is often delayed because of the time it takes for the sensations to reach the cerebral cortex. Why would this be the case based on propagation of the axon potential?
- Fill in the blanks with the correct term chosen from the following: afferent motor effectors peripheral efferent receptors If you touch a hot stove with your hand, the sensory (1) ________________ in your hand send a signal of pain to the CNS through the (2) ________________ axons of the (3) _______________ nervous system. When the information reaches the CNS and is processed, a(n) (4) ________________ response is sent through the (5) ________________ axons of the PNS system to skeletal muscles that are (6) ________________.26) You are being approached by a bear in the woods. Unlike what you may have heard, you do not want to play dead (bears eat dead things) and you do not want to run or climb a tree because the bear is faster than you. You need to make the bear think you are a threat by looking big and speaking to it. a) Which part of the nervous system has been activated, specifically. b) Name two organs/tissues that will be activated/ receive blood. c) Name two organs/tissue that will be deactivated/ have blood diverted.Which of the following nerve fibers exhibits EFFERENT nerve function? Group of answer choices: Facial nerve receiving gustatory impulses from the tongue Trochlear nerve activating extraocular muscles Optic nerve carrying photo signals Trigeminal nerve sending pain, touch and temperature sensations from your face to your brain
- An example of a sensory neuron is one that leads from a pain receptor in the finger to the spinal cord. A pin can be pressed against the skin without eliciting a response from the pain receptor. However, if the pin is jabbed into the finger, the pain receptor may be stimulated and the finger would quickly withdrawn through a reflex arc. How do we sense different types of pain (very painful vs. not painful at all)? Using what you understand about threshold potentials and the all-or-none principle, explain how it is possible to sense different levels of pain. question is in boldWhile taking the cake out of the oven, you accidentally touch the hot oven rack with your wrist. Describe the reflex action that follows. Why do you act before you feel the pain of the burn?A pin can be pressed against the skin lightly and elicit no response from the pain receptor how ever, if this pain is jabbed into the finger, the pain receptor may be stimulated and the finger would quickly be withdrawn through a reflex arc. use what you know about threeshold potential and the all-or-none principle to explain different levels of sensation (light touch or pain)
- An example of a sensory neuron is one that leads from a pain receptor in the finger to the spinal cord. A pin can be pressed against the skin without eliciting a response from the pain receptor. However, if the pin is jabbed into the finger, the pain receptor may be stimulated and the finger would quickly be withdrawn through a reflex arc. How do we sense different types of pain (very painful vs. not painful at all)? Using your knowledge of threshold potential and the all-or-none principle, explain how it is possible to sense different levels of pain.Match the numbers in Figure with the description of what is happening as the sensory neurons, interneurons, and motor neurons communicate with one another. Start with number 1. ____ 1 Graded potential starts in a sensory receptor in the skin. ____ A t a second synapse, a graded potential followed by an action potential occurs in a secondary interneuron, which reaches the cerebral cortex. The graded potential triggers an action potential in a sensory neuron. ____ The lower motor neuron forms a neuromuscular synapse with the hand muscles, which causes the muscles to contract as he writes the letter. ____ In another synapse, the neurotransmitter creates a graded potential, which triggers an action potential in the lower motor neuron. ____ A primary interneuron forms an action potential and crosses to the opposite side of the brain. ____ A stimulus from the brain causes a graded potential and then an action potential to form in an upper motor neuron (which crosses back to the original side…A stronger stimulus means that the action potentials traveling down your nerves will have a higher amplitude. True False