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Muscular System
Term | Definition |
---|---|
Name the 3 types of muscle? | 1. Skeletal(striated) 2. Smooth(visceral) 3. Cardiac muscle |
Are skeletal(striated)muscles voluntary(controlled) or involuntary(uncontrolled)? | Voluntary |
Identify 2 examples of skeletal(striated)muscle. | 1. Biceps Brachii 2. Triceps Brachii |
What are the characteristics of tendons? | 1. Strong 2. Tough 3. Non-elastic 4. White 5. Collagenous 6. Fibrous |
Is Smooth(visceral)muscle considered voluntary or involuntary? | Involuntary(Autonomic) |
Where are examples of smooth muscle found? | 1. GI tract 2. Uterus 3. Blood vessels 4. Urinary bladder |
Is Cardiac muscle voluntary or involuntary? | Involuntary |
Why is cardiac muscle unique? | When one cardiac muscle cell is stimulated, all the cardiac muscle cells are stimulated |
True or False: Cardiac muscle cells contract separately? | FALSE-Contract together |
What do cardiac muscles have the unique ability to do? | Receive an impulse,contract,immediately relax,and then receive another impulse |
A steady or constant state of partial contraction maintained in a muscle is called? | Muscle Tone |
Some muscle cells in a muscle will always be contracting while other muscle cells are? | At rest |
Muscles that are at rest will contract while those that were contracting do what? | Go into relaxation |
The alternating of muscles contracting and relaxing allows us to do what for long periods of time without tiring? | Maintain body posture |
What do nerve impulses do to assist in maintaining our body's posture for long periods of time? | Alternate between various groups of muscle cells thus allowing all muscles to have periods of rest |
The 2 types of muscle contractions are? | 1. Isotonic 2. Isometric |
What type of muscle contractions occur when muscles become shorter and thicker and the tone(tension)remains the same? | Isotonic |
What type of muscle contractions occur when the muscles involved remain at a constant length and the tone(tension)against the muscle increases? | Isometric |
What is the name for the more fixed attachment of a muscle that serves as a basis for the action is? | Origin(Base) |
The moveable attachment where the effects of muscular contraction are seen is known as? | Insertion |
What is the name for muscles that move a limb toward the midline of the body? | Adductor muscles |
How do Abductor muscles move limbs? | Move limbs away from midline of the body |
What is the specific action of Flexor muscles? | Bend a limb at a joint(ex:Biceps) |
What is the function of Extensor muscles? | Extend a limb at a joint(ex:Triceps) |
Muscles that rotate a limb are called? | Rotators |
Movement of the foot upward is known as? | Dorsiflexion |
Movement of the foot toward the ground is called? | Plantar flexion |
What are the muscles involved in smiling and laughing called? | Zygomaticus |
The 2 muscles that close the jaw(mandible) are? | 1. Masseter 2. Temporalis |
The name for the muscle that abducts an arm and is a site for intramuscular injections(IM)is? | Deltoid |
How many skeletal muscles do humans have? | 656 |
1. Deltoid 2. Gluteus medius 3. Vastus lateralis | 1. Deltoid 2. Gluteus medius 3. Vastus lateralis |