AP Biology Nervous Systems Part 5.

Slides:



Advertisements
Similar presentations
Muscle Contraction.
Advertisements

Skeletal Muscle Activity: Contraction
Neuromuscular Junction
Muscle Function.
Skeletal Muscle Contraction
Chapter 24 …. a little anatomy and physiology. Levels of organization in the vertebrate body.
Muscles n Skeletal muscle organization and how it contracts.
© 2012 Pearson Education, Inc. Lecture by Edward J. Zalisko PowerPoint Lectures for Campbell Biology: Concepts & Connections, Seventh Edition Reece, Taylor,
Muscular system SKELETAL MUSCLE Skeletal muscle is made up of hundreds of muscle fibers –Fibers consists of threadlike myofibrils –Myofibrils composed.
Histology of Muscle.
Cell Communication (Signaling) Part 2
Muscular & Skeletal Systems. Figure 30.8_1 Muscle Several muscle fibers Single muscle fiber (cell)
The Muscular System What do skeletal muscles do? How do muscles work?
Muscle Contraction. Muscle Movement Muscle fiber must be stimulated: – By an electrical signal called muscle action potential (AP) – Delivered by motor.
Muscle Cells & Muscle Fiber Contractions
AP Biology Nervous Systems Part 5.
Bio 449Lecture 16 - Muscle IIOct. 6, 2010 Excitation-contraction coupling Excitation Contraction Tropomyosin and troponin Cross-bridge cycling Mechanics.
AP Biology Nervous Systems Part 5. Important concepts from previous units: Conformational shape change triggers a transduction pathway leading to response.
Chapter 38: Protection, Support, Movement: Skin, Skeleton, and Muscle.
Chapter 49: Sensory & Motor Mechanisms
Ch : Contraction and Metabolism of Skeletal Muscle
Interaction of thick & thin filaments __________________ –_____________________________________ _____________________________________ –_____________________________________.
____ Chapter 49 ~ Sensory and Motor Mechanisms ( Just focusing on motor mechanisms ) Motor Mechanisms.
Figure Ball-and-socket joint Head of humerus Scapula Hinge joint Humerus Ulna Radius Pivot joint.
Sliding Filament.
Filaments Resting state Electrical impulse (Action Potential) reaches axon terminal.
Synapse – The site of connection between a neuron and a cell. Neurotransmitter – A chemical released at the neuron’s synapse that communicates with the.
Muscle Physiology Dynamics of Muscle Contraction MMHS Anatomy.
Muscular System Notes. Microscopic Muscle Anatomy  Myfibrils  About 1-2 micrometers in diameter  Length of a muscle fiber  Composed of multiple myofilaments.
Skeletal Muscle Contraction
AP Biology Nervous Systems Part 5.
Neuromuscular Junction and Major Events of Muscle Contraction Quiz Review.
Lecture #21 Date ____ n Chapter 49 ~ Sensory and Motor Mechanisms.
Muscle Contraction. 1.Acetylcholine (Ach) is released from the axon terminal (nerve) into the synaptic cleft and binds to Ach receptors in the sarcolemma.
Muscle voluntary, striated involuntary, striated auto-rhythmic involuntary, non-striated evolved first multi-nucleated digestive system arteries, veins.
AP Biology Thick filaments: myosin  Protein  myosin molecule  long protein with globular head bundle of myosin proteins: globular heads aligned.
The Muscular System What do skeletal muscles do? How do muscles work?                      
Concept 50.4: Similar mechanisms underlie vision throughout the animal kingdom Many types of light detectors have evolved in the animal kingdom.
Musculoskeletal System & Movement
The Muscular System What do skeletal muscles do? How do muscles work?
Muscle contraction.
9 Muscles and Muscle Tissue: Part B-Muscle Contraction and Signal Transmission.
The Structure of Skeletal Muscle
9 Muscles and Muscle Tissue: Part B.
Chapter 49: Sensory & Motor Mechanisms
The Muscular System What do skeletal muscles do? How do muscles work?
Introductory Skeletal Muscle – Histology Flash Cards
Unit 4 Cell Communication (Signaling) Part 2
AP Biology Nervous Systems Part 1.
Sensory and Motor Mechanisms
Physiology of Muscle Contraction
Prayer Homework Attendance.
Cell Communication (Signaling) Part 2
Cell Communication (Signaling) Part 2
NOTES: The Muscular System (Ch 8, part 2)
Sensory and Motor Mechanisms
Chapter 49: Sensory and Motor Mechanism
Muscles & Motion.
AP Biology Nervous Systems Part 5
Cell Communication (Signaling) Part 2
Excitation-Contraction Coupling 1. Impulse arrives from motor neuron 2. Neuron releases acetylcholine (Ach) into synapse with muscle 3.
Chapter 49 –Sensory and Motor Mechanisms
Gnarly Nervous Physiology
MUSLCES PART 2 HOW DO THEY WORK?.
Physiology of Muscle Contraction
Cell Communication (Signaling) Part 2
Sliding Filament Theory
Eyes, Ears & ….. Sensory and Motor Mechanisms.
AP Biology Nervous Systems Part 5.
Presentation transcript:

AP Biology Nervous Systems Part 5

Actin and Myosin Microfilaments

EXTRACELLULAR Signal molecule FLUID (first messenger) G protein DAG GTP G-protein-linked receptor PIP2 Phospholipase C IP3 (second messenger) IP3-gated calcium channel Cellular re- sponses Various proteins activated Endoplasmic reticulum (ER) Ca2+ Ca2+ (second messenger) CYTOSOL

Oscilli

Eye Cups

Compound eye up close

Compound eyes of insect

Single Eye

Location of the Retina in your eye

Rods vs. Cones (Look at the shape)

Rods and Cones in the Retina Photoreceptors Neurons Cone Rod Amacrine cell Horizontal cell Optic nerve fibers Ganglion cell Bipolar cell Pigmented epithelium

Locomotion

Swimming and the Fusiform body shape

Walk/Run

Flight

. Synaptic terminal of motor neuron PLASMA MEMBRANE Synaptic cleft T TUBULE ACh SR Ca2+ CYTOSOL Ca2+

. Tropomyosin Ca2+-binding sites Actin Troponin complex Myosin-binding sites blocked. Ca2+ Myosin- binding site Myosin-binding sites exposed.

. Thick filament Thin filaments Thin filament Myosin head (low-energy configuration) Thick filament Cross-bridge binding site Thin filament moves toward center of sacomere. Actin Myosin head (low- energy configuration) Myosin head (high- energy configuration) Cross-bridge

Feedback: Privacy Policy Feedback
Do Not Sell My Personal Information
About project: SlidePlayer Terms of Service

© 2025 SlidePlayer.com. Inc. All rights reserved.