down (contraction: shortens/ dilates) 2. Circular layer: runs around (contraction: constricts/lengthens) xi. Alternates contracting and releasing xii. Peristalsis mixing and moving 1. Controlled by Autonomic Nervous System a. Involuntary ii. iii. b. Controlled by autonomic neuron 2. Vericosities: swollen area; similar to axon terminal does not dead end a. Has synaptic vesicles which could contain ACH or Norepinephrine b. Neurotransmitter can be excitatory (cause contraction) or
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During a Muscle Contraction The muscle fiber is in a resting state. The resting state is slightly negative inside and slightly positive outside. It has to be in this state in order to receive a message. First the brain sends a message to the muscle using a neuron then reaches the axon terminal of the neuron. Calcium gates then open on the axon terminal allowing calcium to rush in. Ach release from axon terminals‚ diffuses across the synaptic clef and binds to (receptors) on motor end plate. Then
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The series of events prompting muscle contraction is started some place in the central nervous system‚ either as willful action from the brain or as reflex action from the spinal cord. Beginning with depolarization at the neuromuscular junction‚ the depolarizing impulse discharges acetylcholine from the nerve ending. Which then diffuses over the neuromuscular junction (a chemical synapse formed by the contact between a motor neuron and a muscle fiber). At the motor end plate‚ the acetylcholine joins
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stage 3.) According to Erikson‚ the focus of a person’s early 30’s is __________ (pg. 481) Developing close relationships with others 4.) The theory that relationships proceed in a fixed order of three stages: stimulus‚ value‚ and role is called_______________ (pg. 482) Stimulus-valve-role (SVR) theory
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by a sequence of alternating contraction and relaxation of the heart muscle‚ and the term used for contraction is systole‚ and the term used for relaxation is diastole. I am explaining this because it is very important terms‚ and involve five stages: 1. The vagus nerve stimulate the sinoatrial node or SAN‚ which is the pacemaker of the heart. Is a small area in the upper wall of the Right atrium‚ close to the vena cava; the fibers of the of the SAN contract 70 times each minutes‚ and after that the
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you analyze forms of simple stimulus learning. As a part of your analysis‚ you must address the following items: • Explain the concept of habituation. • Analyze the factors that affect perceptual learning. • Examine the effects of stimulus exposure. • Discuss the application of simple stimulus learning to at least two real life situations. • Your analysis should include at least three references from scholarly sources. Simple Stimulus Learning Courtney Lymber
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Intrapartum period Labor and delivery: Definition: labor is the process by which the products of conception are expelled from the body. Delivery refers to the actual birth. Adaptive Processes Defi nition: during latter months of pregnancy‚ the fetus adapts to the maternal uterus enabling it to occupy the smallest space possible. The term Attitude refers to the posture the fetus assumes in utero; fetal lie is the relationship of the long axis of the body to the long axis of the mother. Presentation:
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This calcium is then used to initiate contraction‚ given the affinity of troponin to calcium. As troponin attaches to calcium‚ it produces a movement of the tropomyosin molecule that frees up the actin site so that the charged cross-bridge can contact the site resulting in the liberation of energy
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Simple Stimulus Learning Simple Stimulus Learning Throughout time learning has been described as the gaining of information. When one learns‚ they are responding to stimuli that have triggered their ability to acknowledge what is going on around them. An operational definition of stimulus can be something or someone that initiated or has been viewed as starting a response. In other words “much of our behavior consists of learned responses to simple signals” (Northern College‚ 2003). There
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The Stimulus-Value-Role Theory has three stages of development. Stimulus‚ the first stage‚ is the evaluation of the physical attractiveness of prospective partners. The first impression towards a person is determined by the physical features‚ such as appearance and social qualities. If both individuals are pleased with each other’s unspiritual characteristics‚ they might enter into the next stage. What is significant in the second stage‚ Value‚ is the mutual understanding between two persons. In
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