Muscles Flashcards
The average muscle fiber contraction cycles lasts about
0.1 seconds
Cardiac muscle is classified as
Involuntary striated muscle
Anaerobic muscle metabolism results in ____ formation as a result of incomplete glucose metabolism
Lactic acid
- Acetylome is a neutrons miter
- Glycogen is a storage form of glucose found in muscle
- Myoglobin is a storage form of oxygen found in muscle
When the sternocephalicus muscle contracts what happens in the animal’s body
The head and neck are lowered
The internal abdominal oblique muscle is partially named based on
The direction the fibers run
The linea alba is a/an
Aponeurosis
- Epimysium is the membrane that surrounds a muscle
- Ligament connects bone to bone
- Tendon attaches muscle to bone
All or nothing principle of muscle physiology, refers to
The contraction of a muscle fiber
The diaphragm is composed of
Voluntary striated muscle
Stretching the wall of the small intestines will result in
Increases force of visceral smooth muscle contraction
When skeletal muscle contracts, which site undergoes the greatest movement
Insertion of the muscle
The triceps contracts bronchi muscle is partially named based on
Its location
Which structure of a muscle contains adipose tissue that contributes to the grossly visible marbling of meat
Perimysium
The muscle in an animal that corresponds to the calf muscle in humans is the
Gastrocnemius muscle
- Biceps femocis muscle is connected to the femur
- Deep digital flexor muscles are located in the feet
- Quadricep femoris muscle is located on the cranial thigh area
The outermost connective tissue layer of a muscle is the
Epimysium
- Endomysium surrounds a muscle fiber
- Perimysium surrounds a group of muscle fibers called a fascicle
What type of muscle controls the movement of an animal’s skeleton
Voluntary striated muscle
In muscle, the source of a phosphate molecule needed to recharge an ADP molecule to an ATP molecule is
Creatine phosphate
Groups of cardiac muscle cells adapt their contraction rate to
The contraction rate of the fastest cell
Which structures contain visceral smooth muscle
Stomach and urinary bladder
Which three muscles make up the hamstring muscle
Biceps femoris, semitendmosis, Semimembranosus
A skeletal muscle that contracts at the same time as the prime mover muscle and assists in carrying out the prime mover’s action is a/an
Synergist
- Agonist is the prime mover muscle
- Amagonsit would work against the prime movers
- Fixator muscles stabilize joints
If the fibers of a muscle are running caudoventrally, in which direction are they running
To the back of the animal and down
The contracting unit of a skeletal muscle is the
Sarcomere
Which motor unit would an animal most likely use to move its eyeball
1 nerve fiber, 2 muscle fibers
Smooth muscle is classified as
Involuntary nonstriated muscle
The “pacemaker” of the heart is the sinoatrial node located in the wall of the
Right atrium
The respiratory muscles that work together to increase the size of the thoracic cavity when they contract are the
Diaphragm and external intercostal muscles
The two major sources of energy for normal muscle metabolism are
Glucose and oxygen
Another name for a skeletal muscle cell is a skeletal muscle
Fiber
The parasympathetic nervous system has this overall effect on the heart
It causes it to beat with less force
-The sympathetic nervous system (fight or flight) does the opposite
Articular cartilage is made up of this
Hyaline
Type of cartilage found in the external ear and in the epiglottis
Elastic
Fibrous membrane that covers the outer surface of a bone
Periosteum
A mature cartilage cell
Chondrocyte
