Ch. 24 - Muscular System Flashcards
(19 cards)
Muscle Tissue is responsible for what?
- regulates blood flow
- procudes heat to help regulate body temperature
- controls passage of substances through body openings
Which muscle is considered striated and vountary?
Skeletal
What is the rhythmic contraction that pushes substances through tubes in the body?
Peristalsis
What is the structure that covers an entire skeletal muscle and separates muscles from each other?
Fascia
What is it called when you bend a body part or close a joint?
Flexion
If muscles or tendons are excessively stretched, what can this lead to?
Stains
What changes may occur due to the natural aging process?
- Decreased dexterity
- Decreased speed of contractions
- Decreased strength of contractions
What is caused when muscles or tendons are excessively stretched?
Strain
What is the oxygen-storing pigment that gives muscles its pinkish color?
myoglobin
What is a goup of inherited disorders characterized by muscle weakness and a loss of muscle tissue?
Muscular dystrophy
What is the difference between the amount of oxygen used to make ATP at rest and after strenuous exercise?
Oxygen debt
What is a condition also known as wry neck and is charcterized by a cervial deformity in which the head bends toward the affected side while the chin rotates to the opposite side?
Torticollis
Why is it important to understand specific terms for body movements?
To be able to describe range of motion in a patient
What adducts the arm?
The pectoralis major muscle
What do spinchters help to regulate?
contents of hollow organs
Perstaltic movement is best described as what?
Visceral smooth muscle responding to specific nuerotransmitters
What is the correct sequence of anatomical parts of a muscle from largest to smallest?
muscle, fascicle, muscle cell, myofibril
The striations in skeletal and cardiac muscle exist due to the presence of what?
Actin & Myosin
