Squid Muscular Structure

Words: 1333

Pages: 6

Open Document

Two major organ systems are responsible for coordinating the function of the animal body: the endocrine system and the nervous system. Whereas the endocrine system usually leads to slower and more sustained responses, the nervous system enables rapid coordination of body function. Communication within the nervous system relies on neurons. They are nerve cells that transmit information via electrical and chemical signals. A neuron is consisted of a cell body which contains a nucleus and other cell organelles, and a long extension that convey signals. Each neuron may communicate with thousands of other neurons, forming network that enables us to remember, learn, and move our body.
To understand how neurons convey different messages, we must study …show more content…
The way one’s muscle is constructed enables him to be either really strong or really fast. Or both. The extension of a squid’s tentacle muscle is faster than any of a human muscle. The structure of the squid muscle is responsible to its ability to extend his tentacles extremely fast and far. Most muscle structure is built to be strong. However, the squid muscular structure, and more specifically its sarcomere arrangement, is the factor that makes this type of movement possible. The length of the sarcomere determines capacity of the contraction speed and strength of the muscle. Moderate to long sarcomere have a great overlap between the myosin and the actin filament. Most species have longitudinal muscles that enables allows them to use force and power to catch their prey. Because its sarcomeres are short, squids can contract its muscles extremely quickly since the transverse muscle cells are built to apply speed as opposed to use strength. The squid can contract, extend, and retract its tentacles extremely quickly, which allows him to capture his prey. Form an evolutionary standpoint, some animals have survived by being stronger than their prey and some other species have survived by being faster than their predator or prey. The length of a species sarcomere influences strength and speed of

Essay on Biology: Classification of Life

Cell = Basic building block of all living things Organelle Molecule Atoms Notes on: Cells Living organism may be made up of one cell: i.e. unicellular Living organisms, made up of numerous cells: i.e. multicelluar All cells have similar structures and chemicals Cell membrane: controls what goes in and out of a cell. Made up of biphosphorus fatty layer with proteins Cytoplasm: Jelly interior, similar to seawater Nucleus: Control Centre of cell. Made up of nucleic acid and compounds…

Words 1466 - Pages 6

Know The Effects Of Psilocybin Magic Mushrooms

Phyla) a. Chytridiomycota- primitive fungi, powerful decomposers, digest cellulose, chitin and keratin, contributes to worldwide amphibian decline b. Zygomycota- bread molds, no real “fruiting bodies”, form spores c. Ascomycota- sac fungi, form structures called ascocarp, ex: yeast and truffles, important source of antibiotics and for food production, some are predatory d. Basidiomycota- mushrooms, toadstools, puffballs, stinkhorns, shelf fungi; some deadly, edible or hallucinogenic G. Knowhow…

Words 1415 - Pages 6

Module 11 Essay

branched (many different ways) 4. Anatomy Epidermis- outside layer of sponge Mesenchyme- like a cytoplasm; jelly-like substance separating Epidermis from inside 5. Two different support systems Spicules- made up of glass-like substances, makes structure stronger (made up of silica) Spongin- second support system; web of proteins used for support 6. Collar Cells (aka choanocytes)- have flagella that push and pull water and food to sponge and gets rid of excess waste. 7. Amoebocytes- cell that moves…

Words 1802 - Pages 8

Ch 18 workbooks Essay

Lesson 18.1: True or False Name___________________ Class______________ Date________ Write true if the statement is true or false if the statement is false. ___f__ 1. Sponges are terrestrial invertebrates. ___t__ 2. Adult sponges cannot move from place to place on their own. ___t__ 3. Because sponges evolved before other invertebrates, they do not have a skeleton. ___t__ 4. Bacteria are one food source for sponges. ___f__ 5. The function of a nematocyst is gamete (egg and sperm) production. ___f__…

Words 4240 - Pages 17

Essay on Cetacean

are insulated with a thick layer of blubber to keep warm in the cool water they live in. Cetaceans breathe air. They surface periodically to exhale carbon dioxide and inhale a fresh supply of oxygen. During diving, The blowholes are closed by a muscular action. When the Cetacean surfaces the blowhole opens and warm air is exhaled. Cetacean's blowhole's have evolved to a position on the top of their heads to simplify breathing. Cetacean's can hold their breath much longer than most mammals, which…

Words 1156 - Pages 5

Bio Study Guide Essay

Echinodermata (sea stars) 4. Chordata (humans, dogs) 5. Nematoda (round worms) 6. Arthropoda (insects) 7. Platyhelminthes (flat worms) 8. Brachiopoda (lampshells) 9. Annelida (segmented worms) 10. Mollusca (snails, slugs, squids) Tissues * Parazoa (no true tissues) –PORIFERA * Eumetazoa (true tissues) –ALL OTHER PHYLA PORIFERA * Sponges * The choanoflagellates and they are colonial protists * All are attached to a substrate * No true tissues…

Words 4052 - Pages 17

Sexually Transmitted Diseases Essay

Sound 92 Simple Machines 93-99 Unit 5 The Physical Environment Weather and Climate 100-113 Soils 114-128 Unit 6 Living things in the Environment Plant and animal cells 129 Eukaryotes vs prokaryotes 130 Structures and functions 133-137 Microbes 148-150 Onion and cheek cells 150-151 Ecological study 154 Seed…

Words 35677 - Pages 143