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Transcript of Musculature
Types of Muscle Tissue
Functions of Muscles
Characteristics of Muscle Tissue
Contraction at the Organ Level and the Motor Unit
Energy Production in Muscle Tissue
Contains intercalated disks
Storage and movement of substances in organ systems
What kind of muscle tissue is found in the heart?
A) Skeletal muscle
B) Cardiac muscle
C) Smooth muscle
D) Voluntary muscle
Sliding Filament Model of Contraction
McGraw Hill Animation: Sarcomere Shortening
Overview of Contraction
Skeletal Muscle as an Organ
Muscle Fiber Types
The Necessity of Calcium
The Crossbridge Cycle
What is the name of the layer of connective tissue that surrounds the entire muscle?
What function of muscle is related directly to the activity of mitochondria?
A) Produce movement
B) Maintain posture
C) Generate heat
D) Storage and movement of substances in organ systems
What characteristic of muscle tissue describes that it is electrically active?
What protein is found only in the dark bands of muscle striations?
Contraction is dependent on the presence of what substance around the myofibril?
What is the name of the neurotransmitter at the neuromuscular junction?
What couples excitation to contraction in muscles?
What unique organelle in a muscle cell is responsible for the contractile properties of the tissue?
D. Sarcoplasmic Reticulum
What part of the muscle contains blood vessels and nerves connected to individual muscle fibers?
What type of tissue is found in a tendon?
A) Skeletal muscle tissue
B) Dense Irregular CT
C) Areolar CT
D) Dense Regular CT
Which phase of the muscle twitch is not dependent on calcium?
A) Latent Period
B) Contraction Period
C) Relaxation Period
The Cross Bridge Cycle
1. Crossbridge formation
2. Power stroke
3. Crossbridge detachment
4. Recovery stroke
One neuron and all the muscle fibers it controls
Types of Contraction
Isotonic (muscle changes length)
Isometric (literally means "same length")
C H O + 6O --> 6CO + 6H O