Spindle fiber - Study guides, Class notes & Summaries

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...

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...

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.

Flexibility - ANSWERThe ability to flex, extend, or circumduct the body's joints through their intended full range of motion without substantial decrement in limit strength. Training Progressions - ANSWERGeneral to specific Seated or lying to standing Single joint to multi joint Stable to unstable Simultaneous to alternating Slow to fast The SSC of muscle contraction driving plyometrics has three phases: a loading eccentric phase, a transitional amortization phase, and a(n) - ANSWE...

Cell Theory - ANSWER-Discovered in the 17th century 1. All living things are composed of cells 2. The cell is the basic unit of life 3. The chemical reactions of life take place inside the cell 4. Cells arise from only preexisting cells 5. Cells carry genetic information in the form of DNA. This genetic material is passed from parent cell to daughter cell 6 Kingdoms - ANSWER-Bacteria, Archaea, Protista, Fungi, Plantae, and Animalia Prokaryotic - ANSWER-"before nucleus", lacks a memb...

Explain the events occuring in each phase of Meiosis I - Answer Prophase I - Centrioles move to opposite ends. Spindle fibers form, and chromosomes condense Metaphase I- Chromosomes attach to the spindle fibers and line up at the equator of the cell Anaphase I - Chromosomes are spereated by spindle fiber and chromatids go to the poles Telophase I- Chromatides decondense back into chromatin and 2 new nuclear envelopes form.

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...

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...

Neural Circuitry that travels outside the spinal cord - ANSWER-Peripheral nervous system A sensory receptor within a muscle that detects changes in length and helps regulate contraction - ANSWER-Muscle Spindle Branches of the cell body that act as receivers, collecting information from other neurons - ANSWER-Dendrites Muscle contraction is triggered when the following chemical neurotransmitters binds to receptors on the muscle - ANSWER-acetylcholine Division of the peripheral nervous...

6 Stages of Cell Cycle Latest Update 100% Solved 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. Anaphase The centromeres split. The two chromatids separat...