34 notecards = 9 pages (4 cards per page)
Which is not true of skeletal muscle?
c. It is one of the major components of hollow organs.
Because the cells of skeletal muscle are relatively large and clindrical in shape, they are also known as__________.
Skeletal muscle cells have more than one nucleus.
The two contractile proteins that make up the myofilaments of skeletal muscle are _______and ______.
myosin and actin
Each muscle cell is surrounded by thin connective tissue called the
A strong cordlike structure that connects a muscle to another muscle or bone is
The junction between a nerve fiber and a muscle cell is called a _______.
The neuron and muscle fiber membranes do not actally touch but are seperated by a fluid-filled gap.
Humans have how many muscles and make up 40% of the body weight.
What are the functions of muscle tissue?
What are the special characeritics of muscles?
Smooth muscle tissue
is found in the walls of hllow visceral organs such as the stomach, urniary bladder, and respiratory passages.
is a motor neuron and all the muscles it supplies
What is muscle twitch?
is a rapid contraction that is triggered by a single action potential.
skeletal muscle s always slightly contracted due to spinal reflexed. It does not produce ative movement. Essential to keep muscles firm, healthy, ready to respond, stablize posture and joints.
In muscle metabolism, muscle fibers can make ATP via three mechanisms:
1. aerobic respiration- requieres O2--slow, but makes the most ATP per molecule of glucose.
A prime mover or ___________ is responsible for producing a particular type of movement.
Skeletal muscles are named on the basis of many criteria. Name one?
direction of muscle fibers
The _________ musculature includes muscles that move the vertebral colum and muscles that move the ribs.
Muscles that act on the _____ cause movement at the hip, knee, and foot joints.
This two-headed muscle bulges when the forearm is flexed. It is the most familiar muscle of the anterior humerus. It is the ____.
These abdominal muscles are responsible for giving me my "six pack". They also stabalize my pelvis when walking. They are the ________.
This lower limb muscle, which attaches the the knee is extended, is the _________.
The ________is the largest and most superficial of the gluteal muscles.
Skeletal muscle is:
The functional unit of skeletal muscle is the
The thin filament of muscle cells is called
the thick filaments of muscle are
Myglobin has a special funtion in muscle tissues. It______________.
holds a reserve supply of oxygen in the muscle
In skeletal muscle which region or organelle contains the highest concentration of calcium ions in a resting muscle fiber?
sarcoplasmic reticulum (SR)
The theory of muscle contaction is called
sliding filament model