Pre-Lab Quiz 8 & 12

The structural unit of compact bone is the: a. osteon b. canaliculus c. lacuna

a. osteon

Circle the correct underlined term. Compact/Spongy bone looks smooth and homogeneous.

Compact

__________ bones are generally thin and have a layer of spongy bone between two layers of compact bone. a. flat b. irregular c. long d. short

a. flat

Which is false of the skeletal muscle? a. it enables you to manipulate your environment b. it influences the body's contours and shape c. it is one of the major components of hollow organs d. it provides a means of locomotion

a. it enables you to manipulate your environment

The two contractile proteins that make up the myofilaments of skeletal muscle are _________ and ___________.

actin; myosin

Circle the correct underlined term. The axial/appendicular skeleton consists of bones that surround the body's center of gravity.

axial

Each muscle fiber is surrounded by thin connective tissue called that: a. aponeurosis b. epimysium c. endomysium d. perimysium

c. endomysium

Circle the correct underlined term. The shaft of a long bone is known as the epiphysis/diaphysis.

diaphysis

Circle the correct underlined term. Because of the cells of the skeletal muscle are relatively large and cylindrical in shape, they are also known as fibers/tubules.

fibers

The femur is an example of a(n) __________ bone.

long

The junction between an axon and a muscle fiber is called a ______________.

neuromuscular

Circle the correct underlined term. The contractile unit of muscle is the sarcolemma/sarcomere.

sarcomere

True/False. Larger, more powerful muscles have relatively less connective tissue than smaller muscles.

False

True/False. Cartilage has a covering made of dense irregular connective tissue called a periosteum.

False, perichondrium

True/False. Skeletal muscle cells have more than one nucleus.

True

True/False. The neuron and muscle fiber membranes do not actually touch but are separated by a fluid-filled gap.

True

True/False: Embryonic skeletons consist primarily of elastic cartilage, which is gradually replaced by bone during development & growth.

True

A cordlike structure that connects a muscle to another muscle or bone is: a. a fascicle b. a tendon c. deep fascia

b. a tendon

The type of cartilage that has the greatest strength and is found in the knee joint and intervertebral discs is: a. elastic b. fibrocartilage c. hyaline

b. fibrocartilage

All of the following are functions of the skeleton except: a. attachment for muscles b. production of melanin c. site of red blood cell formation d. storage of lipids

b. production of melanin