Fish phylogenetic tree based on protein size Amanda Reed Lab partners: Lecia Redwine‚ Kyle Hatcher TA: Baneshwar Singh Biology 117‚ Section 25 Tuesday 10:30 AM Introduction Although tree diagrams have been used since the days of Charles Darwin‚ biologists have only recently adopted the tree model of evolution to read and interpret phylogenies. One of the reasons for this is the confusion that often arises from using a tree model to describe a phylogeny (Baum‚ 2008a). Many people interpret
Premium Protein Amino acid Metabolism
CHAPTER 8 The Muscular System Multiple-Choice Choose the one alternative that best completes the statement or answers the question. 1. Which of the following is NOT a function of muscle tissue? A) Heat production B) Regulation of organ volume C) Vitamin D production D) Body movements E) Body position Answer: C Reference: Overview of Muscle Tissue Degree of Difficulty: Medium 2. The structure made of dense irregular connective tissue that holds muscle fascicles together and separates
Premium Muscle Skeletal muscle Muscular system
d; fiber a; endomysium h; sarcolemma e; myofibril d. a muscle cell thin reticular connective tissue surrounding each muscle cell plasma membrane of the muscle fiber a long filamentous organelle with a banded appearance found within muscle cells actin- or myosin-containing structure e. f. g. h. 1. f; myofilament 8. 9. j. k. k; tendon cord of collagen fibers that attaches a muscle to a bone 2. List three reasons why the connective tissue wrappings of skeletal muscle are important
Premium Muscle Myosin
NAME___________________________ DATE_________________ Chapter 8 Study Guide 1. Name and describe the three different layers of connective tissue in a muscle. Epimysium (sheet of connective tissue that covers a muscle as a whole)‚ endomysium (delicate connective tissue membrane covering the highly specialized skeletal muscle fibers) ‚( perimysium (tough connective tissue surrounding fascicles) 2. Myofibrils are composed primarily of two protein filaments called _____________actin__________ and
Premium Muscle Skeletal muscle Muscular system
In order for a muscle to contract requires a nerve impulse to arrive at the neurotransmitter junction. This then causes a release of acetylcholine (ACh) from the presynaptic terminal. By binding with its receptors on the membrane of the muscle fiber‚ which opens sodium channels generating an action potential that spreads through the length of the fiber‚ stimulating release of calcium from the sarcoplasmic reticulum. Calcium is what activates the contractile mechanism‚ causing the muscle fiber to
Premium Muscle Myosin Acetylcholine
Vertebrate Physiology Study Guide Last Part of Chapter 10 □ Cilia are specialized for odor detection (They have receptors and second messenger machinery □ Mucus from the olfactory glands traps odorants □ Linda Buck identified a large family of odorant receptor genes in rats(1‚000 types); belong to the G protein associated 7-transmembrane receptor family □We only have 400 odorant receptors; the olfactory system appears to use combinations of receptors(words) to greatly reduce the number of
Premium Blood Heart Myosin
Animal Physiology Friday January 13‚ 2012 What are Animals? Invertebrates No spinal column Vertebrates Spinal column Major Animal Phyla Porifera Cnidaria Platyhel-minths Mollusca Annileda Nematoda Arthro-poda Echino-dermata Chordata What is Animal Physiology? What is Physiology? “The study of how animals work” (function) Knut Schmidt-Nielsen (1915–2007) – came up with the whole scheme of animal physiology from cell to whole organism temperature
Premium Action potential Signal transduction Neuron
specific direction; then it will relax so that the muscle can return to its original position. The cartilage‚ the synovial fluids‚ ligament‚ and tendons allow for free movement and are vital to the body for movement. The sarcomere‚ which gives energy in Actin and Myosin through the ATP‚ that enables the muscle to contract with the calcium. When the instinct stops‚ the calcium then departs to its origin in the sarcoplasmic reticulum. When the player stops running‚ the muscular-skeletal will go back into
Premium Football Association football American football
mechanical properties of a cell. Fibrillar polymer filaments‚ microtubules‚ and intermediate filaments are major constituents of the cytoskeleton‚ which constantly change their organization during cellular activities. The actin cytoskeleton is especially polymorphic‚ as actin filaments can form multiple higher order assemblies performing different functions. Structural information about cytoskeleton organization is critical for understanding its functions and mechanisms underlying various
Premium Cell Eukaryote Protein
BTEC Level 3 Applied Science Unit 1 – examiners report: Achieves P5‚ M2 needs to discuss different tissue types to achieve D2. In this essay I will include information regarding: cell differentiation‚ the functions of various cell organelles‚ tissues and a comparison of different tissue types. Cellular differentiation is the process by which a less specialised cell becomes a more specialised cell type. Differentiation happens a number of times during the development of a multicellular organism as
Premium Cell Muscle Cardiac muscle