Spindle fiber - Study guides, Class notes & Summaries

1. To which of the following structures do the cross-bridges attach during muscle action? a. actin b. myosin c. M-bridge d. sarcolemma - Answer- actin 2. Which of the following substances regulates muscle actions? a. potassium b. calcium c. troponin d. tropomyosin - Answer- calcium 3. Which of the following substances acts at the neuromuscular junction to excite the muscle fibers of a motor unit? a. acetylcholine b. ATP c. creatine phosphate d. serotonin - Ans...

NSCA CPT EXAM PRACTICE QUESTIONS & ANSWERS, RATED A+ Which of the following changes in muscle length and tension are associated with a muscle spindle and a golgi tendon? A. MS - rapid muscle length change, GT - increase in muscle tension B. MS - decrease in muscle tension, GT - slow muscle length change C. Slow muscle length change, GT - decrease in muscle tension D. MS - increase in muscle tension, GT - fast muscle length change - -A. MS - rapid muscle length change, GT - increase in ...

AP Biology Unit 5 Questions & Answers 100% Solved Genome Correct answer-The genetic material of an organism or virus Chromosomes Correct answer-structures made of one DNA molecule and proteins Somatic Cells Correct answer-body cells Gametes Correct answer-reproductive cells Chromatin Correct answer-The complex of DNA and proteins that makes up eukaryotic chromosomes. Centromere Correct answer-Point on a chromosome by which it is attached to a spindle fiber during cell division

Nsca CPT Practice Questions With 100% Correct Answers Which of the following changes in muscle length and tension are associated with a muscle spindle and a golgi tendon? A. MS - rapid muscle length change, GT - increase in muscle tension B. MS - decrease in muscle tension, GT - slow muscle length change C. Slow muscle length change, GT - decrease in muscle tension D. MS - increase in muscle tension, GT - fast muscle length change - answerA. MS - rapid muscle length change, GT - increase...

What is motor control? correct answers Process by which organisms use their neuromusclar system to perform actions/interact with environment. Requires integration of sensory input and proprioception to allow for appropriate selection of degree of contraction. Describe the overall schematic of motor control. correct answers Basal Ganglia & Cerebellum--> Upper Motor Neurons (Motor Cortex and Brainstem Centers) --> Lower Motor Neurons & Local Circuit Neurons--> Lower Motor Neuro...

Science Olympiad Cell Biology 2024 Graded A+ Prokaryotic cell Single-celled miroorganism with no membrane bound organelles Eukaryotic cell Has a nucleus and membrane bound organelles Cabpsule Only in plants, jelly-like fluid, protects cell wall Nucleiod Singular circlular molecule of DNA Flagellum Protein fiber, movement Plasma membrane Controls what goes in and out Cilia Sweep materials off cell surface Rough ER Ribosomes, materials for protein synthesis Smooth ER ...

EXPH 386 Exam 3 Questions And Answers (Updated And Verified) Neuromuscular system - answercoordination and integration of the muscles of the body together with the nerves that supply them cell body (soma) -peripheral - answerdictates the critical firing rate of the action potential. Larger cell bodies are associated with higher critical firing rates. Also contain the structures involved in replication and transmission of the genetic code Dendrites - answershort neural branches that *recei...

Interphase The cell grows to its mature size, makes a copy of its DNA, and prepares to divide into two cells. Centrioles are also copied. Prophase Chromatin in the nucleus condenses to form chromosomes. Spindle Fibers form a bridge between the ends of the cell.Metaphase The chromosomes line up across the center of the cell. Each chromosome attaches to a spindle fiber at its centromere.

_________ leads to the death of cells by damaging their DNA or interfering with DNA synthesis. Some also interfere with the functioning of the mitotic spindle. (anaphase) - chemotherapy _____________ is designed to prevent cells from receiving signals for continued growth and division - hormone therapy ____ arrested—does not go on to divide - G0 ____ is replicated before mitosis begins - DNA _____ is packaged into chromosomes. - DNA ______ Results in each chromosome being composed of tw...

Cell Cycle Review Latest Update Graded A life of a cell cell cycle cell cycle has ____ stages 3 longest part of cell cycle interphase stage that does the dividing mitosis DNA is copied interphase mitosis has _____ phases 4 shortest part of cell cycle cytokinesis cell becomes 2 cells during cytokinesis nuclear membrane dissolves prophase chromosomes line up during metaphase cell cycle ends when cell divides nuclear membrane reappears telophase homologous chromosomes begin to pair up d...