1. A. Homeostasis is defined as a condition of equilibrium in the body internal environment. For example the internal organs‚ behaviors‚ body temperatures. In homeostasis it can be considered as dynamic as it is always changing. The liver‚ kidneys‚ autonomic nervous system and endocrine system‚ and hypothalamus help maintain homeostasis. For example‚ my brother has imbalance homeostasis due to having seizures. Because his brain is not functioning correctly‚ his homeostasis is not balance. B. Medial
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Communication‚ Homeostasis & Energy Communication & Homeostasis Outline the need for communication systems within multicellular organisms‚ with reference to the need to respond to changes in the internal and external environment and to co-ordinate the activities of different organs. Organisms need to respond to external stimuli‚ e.g. temperature‚ oxygen concentration and levels of sunlight. These may be over time‚ e.g. winter fur to summer fur‚ or quickly‚ e.g. changing size of pupils. Internal
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neuromodulators are and how they modulate the sensation of pain. The sensation and clarification of pain includes activation of individuals brain regions associated with spatial discriminative and affecting mechanisms of pain awareness. This is clearly a potential concern of movement of the primary afferent nociceptor‚ and comprises integration of the polysynaptic yield from the primary afferent through several arising pathways. The exact position of specific supraspinal regions related with pain perception
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TRUE/FALSE. Write ’T’ if the statement is true and ’F’ if the statement is false. 1)Hematopoiesis refers to the formation of blood cells within the red marrow cavities of certain bones. 1) T 2) Bones are classified by whether they are weight-bearing or protective in function. 2) F 3) The trabeculae of spongy bone are oriented toward lines of stress. 3) F MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 4) The cell responsible for secreting
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the central and peripheral nervous systems. 7. Classify neurons structurally and functionally. Membrane Potentials 8. Define resting membrane potential and describe its electrochemical basis. 9. Compare and contrast graded potentials and action potentials. 10. Explain how action potentials are generated and propagated along neurons. 11. Define absolute and relative refractory periods. 12
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What is psychology? The scientific study of behaviour and the physiological and mental processes that underlie such behaviour. A profession that applies the findings of psychological research to real world problems Wilhelm Wundt First psychology lab in 1879 Main focus was on consciousness Many students established research labs in North America and Germany. G. Stanley Hall Student of Wundt for a brief time Growth of psychology in North America Structuralism Edward TitchenerTo identify
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acceleration Smell Taste Touch – Pressure Warmth Cold Pain Joint Movement and Position Muscle Length Muscle Tension All sensory information arrives at the central nervous system (CNS) in the form of action potentials and the stronger the stimulus‚ the higher the frequency of action potentials. For example‚ touch‚ pressure‚ pain‚ temperature and taste sensations arrive at the primary sensory cortex. The CNS interprets the nature of the sensory information entirely on the basis of the area of the brain
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synapse is made of three parts: the presynaptic ending‚ where the neurotransmitters are‚ along with some other cell organelles; the postsynaptic ending is the part that receives what the presynaptic ending lets go and the postsynaptic ending can be another axon‚ a dendrite‚ or a cell body. Then the synaptic cleft‚ which is the space in between the presynaptic and postsynaptic endings. What happens is that the neurotransmitter is created in the nerve cell‚ and travels by a vesicle. The vesicles store
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(circle or highlight one) – of (10) _______________________ ions. This causes a membrane potential change known as (11) ___________________________‚ which brings the membrane potential closer to the point at which the action potential will occur. If (12) ___________________ (the voltage at which an action potential is generated) is reached at the (13) ______________ ________ (area) of the neuron‚ then an action potential will be generated because (14) ________________________-gated (15) ________________
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Chapter 2- Darwin was the first to suggest how evolutionoccurs. Humans belong to the primate family known as hominins. Characteristics that evolved to perform one function but were co-opted to perform another function are called exaptations. Each group of three consecutive nucleotide bases along the strand of messenger RNA is called a codon‚ which instructs the ribosome to add amino acids to the protein being constructed. Subsequent to the nature-nuture issue‚ a second line of thought surrounding
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