HLSC 2463U Study Guide - Final Guide: Endoplasmic Reticulum, Bone, Ryanodine
Chapter 38- Structure and Function of the Musculosketal System
Circle the Correct Words (answers)
1. Spongy bone also is (compact, cancellous) bone.
2. The small channels that connect the osteocytes in bone are called (lacunae,
canaliculi); spaces in which the osteocytes reside bone are called (lacunae,
canaliculi).
3. In muscle, the greater the innervation ratio of a particular organ, the greater
its (speed of contraction, endurance); higher innervation ratios (prevent
fatigue, provide precision of movement), and lower innervation ratios
(prevent fatigue, provide precision of movement).
4. Ryanodine receptors are located in skeletal muscle (sarcoplasmic reticulum
membranes, sarcomere H bands) and are (potassium, calcium) ion channels.
5. With a dynamic (isotonic) contraction, the muscle maintains a constant
(length, tension) as it contracts; with a static (isometric), the muscle
maintains a constant (length, tension) as (length, tension) increases.
Complete the sentences
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