Put the following steps of muscle contraction in order. Ex…
Put the following steps of muscle contraction in order. Example: If you need to go through a door, then you need to turn the door knob and then open the door. So,1 turn the door knob, 2 open the door, 3, walk through the doorway. Also, fill in the missing word(s). __[BLANK-1]__ Myosin cross-bridges detach and reattach to active sites __[BLANK-2]__ ACh (acetylcholine) is released from neurons – diffuses across _____[BLANK-3]_____ __[BLANK-4]__ Cycle repeats as long as Ca2+ and ATP are present __[BLANK-5]__ Ca2+ binds to troponin on actin filaments, moves tropomyosin out of the way, and exposes active sites on _____[BLANK-6]_____ __[BLANK-7]__ Ca2+ is released from _____[BLANK-8]_____ __[BLANK-9]__ Myosin _____[BLANK-10]_____ attach to actin active sites __[BLANK-11]__ Signal goes from spinal cord to motor neuron – then travels through axons to _____[BLANK-12]_____ terminals __[BLANK-13]__ ACh binds to receptors on the _____[BLANK-14]_____ __[BLANK-15]__ Contraction – using ATP, myosin cross-bridges attach to actin and pull actin filaments toward center of _____[BLANK-16]_____ __[BLANK-17]__ _____[BLANK-18]_____ (enzyme) from sarcolemma decomposes ACh in the synaptic cleft. Contraction ends, muscles relax. Prepares fiber for next stimulus.
Read DetailsIdentify the objects, lines, discs, bands, and zones in the…
Identify the objects, lines, discs, bands, and zones in the following figures. If you don’t remember the bands’ letters, at least describe what the structures are for each. Remember to type the letter with each answer. For example: if Q is antelope, then type Q = antelope. Sarcomere – to label -.png
Read DetailsQuestion from your workbook: “Some insecticides work by inte…
Question from your workbook: “Some insecticides work by interfering with acetylcholinesterase. What would be the consequences to muscles if the insecticide was inhaled or absorbed through the skin? What would you expect to see? Explain in terms of muscle contractions at the molecular level.”
Read DetailsPut the following steps in order of occurrence for endochond…
Put the following steps in order of occurrence for endochondral ossification. Type the number (1 – 10) in the blank for each description of the step. Put your numbers in the correct order of the ossification process. Example: If you need to go through a door, then you need to turn the door knob and then open the door. So,1 turn the door knob, 2 open the door, 3, walk through the doorway. [BLANK-1] Secondary ossification center forms in the epiphyses [BLANK-2] Primary ossification center forms in center of cartilage [BLANK-3] Osteoclasts remove the spongy bone and form the medullary cavity [BLANK-4] Cartilage in the primary center calcifies and chondrocytes die [BLANK-5] Blood vessels and nerves penetrate the center, bring osteoblasts with them [BLANK-6] Periosteal osteoblasts form a compact bone collar around primary ossification center [BLANK-7] Osteoblasts form spongy bone at the primary ossification center [BLANK-8] The epiphyseal disk separates the epiphyses from the diaphysis [BLANK-9] Bone continues to grow [BLANK-10] Bones are pre-formed in hyaline cartilage
Read DetailsEXAM 2 = INTEGUMENTARY, SKELETAL, AND MUSCULAR SYSTEMS It is…
EXAM 2 = INTEGUMENTARY, SKELETAL, AND MUSCULAR SYSTEMS It is worth 100 points. THURSDAY SEPTEMBER 25, 2025. (Immediately after lab quiz.) Maximum Time Limit = 75 minutes. You must complete it in one 75-minute session. Remember to submit it as soon as you are finished. Spelling Counts. Reminder: Late submissions are NOT accepted. You will earn zero points if submitted late. This information is in the Course Outline. IF YOU NEED TO USE SCRAP PAPER, PLEASE ASK. Be sure that you type all of your answers and any work into the exam, too, please. IF YOU NEED TO USE A CALCULATOR, IT MUST BE A REGULAR CALCULATOR (HAND-HELD). REMINDERS: Exams, tests, and quizzes are closed book, closed notes, closed slides, closed assignments, and taken individually. No additional devices allowed other than the one (1) being used for the exam/test/quiz. Only the test/exam/quiz screen should be open. No other windows, websites, programs are permitted. “Cheating = The act or attempted act of deception by which a student misrepresents that he/she has mastered information on an academic exercise that, in fact, has not been mastered.”If you are found to be cheating on an exam or assignment at the very least, you will receive a grade of “0” for that exam or assignment. This may also lead to a failing grade in the course and disciplinary action by the college and the Dean of Academic Affairs. Please do not diminish your learning experience by cheating.
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