Which muscle type has no visible striations? Cardiac Cardiac and Skeletal Smooth

Question

Which muscle type has no visible striations? Cardiac Cardiac and Skeletal Smooth Skeletal Which of the following pairs is not correct? cardiac muscle: striated Skeletal muscle: striated smooth muscles: involuntary cardiac muscle: voluntary Which of the following is not associated with cartilage? Chondrocytes Lacunae Blood vessels Water This is the most widely distributed connective tissue in the body and serves as packing material between other tissues. bone areclar CT blood dense regular CT hyaline cartilage

Explanation / Answer

1. c) Smooth

Skeletal and cardiac muscles have sarcomeres.

Nonstriated = smooth muscles that don't have sarcomeres so they're not striated. They still have myosin, actin, and use the sliding filament mechanism

2. d) Cardiac muscle, voluntary

Skeletal muscle = striated, voluntary, shaped like long fibers, multinucleated.

Smooth muscle = nonstriated, involuntary, shaped like almonds (tapered ends), one nucleus per cell. Cardiac muscle = striated, involuntary, branched

3. c) Blood vessel (Cartilage does not contain blood vessels (it is avascular) or nerves (it is aneural)

Cartilage is composed of specialized cells called chondrocytes

Cartilage has limited repair capabilities: Because chondrocytes are bound in lacunae, they cannot migrate to damaged areas.

Extracellular matrix of cartilage contain water.

4. b) Areolar CT

Loose connective tissues are the packing material in human body. Areolar connective tissue is one among the most abundant connective tissues in the body.

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