Ch. 7 test prep

Question 1

A person’s ability to survive depends on his or her ability to what

Answer 1

Adjust to changing conditions of our environment

Question 2

Skeletal muscle cells appear in what under a micorscope

Answer 2

bundles

Question 3

Describe the shape of a muscle

Answer 3

threadlike & cylindrical

Question 4

Skeletal muscle cells have multiple what

Answer 4

nuclei

Question 5

muscle cell

Answer 5

muscle fiber

Question 6

Which type of muscle tissue is striated & voluntary

Answer 6

skeletal muscle

Question 7

Which type of muscle tissue has dark bands call intercalated disks

Answer 7

cardiac muscle fibers

Question 8

Nonstriated muscles are

Answer 8

smooth muscles

Question 9

Smooth muscles cells are tapered at each end, lack striations, & have a single what

Answer 9

nucleus

Question 10

Where are smooth muscles found

Answer 10

blood vessel walls & hollow internal organs

Question 11

Smooth, nonstriated, involuntary muscle is sometimes called what

Answer 11

visceral muscle

Question 12

Every movement we make involves muscles to what

Answer 12

contraction

Question 13

What is a skeletal muscle

Answer 13

organ

Question 14

A skeletal muscle is composed of what

Answer 14

skeletal muscle fibers & connecting tissue

Question 15

A muscle attachment to the more stationary bone is known as what

Answer 15

origin

Question 16

A muscle attachment to the more movable bone is known as what

Answer 16

insertion

Question 17

The body of the muscle is known as what

Answer 17

body

Question 18

What anchors muscle to bones

Answer 18

tendons

Question 19

What is made of dense fibrous connective tissue

Answer 19

tendons

Question 20

What are small fluid-filled sacs

Answer 20

bursae

Question 21

These lie between some tendons & bones

Answer 21

bursae

Question 22

These are made of connective tissue & lined with synovial membrane

Answer 22

bursae

Question 23

What makes it easier for a tendon to slide over a bone when the tendon’s muscle shortens

Answer 23

bursa

Question 24

Some tendons are enclosed with what tube-shaped structures lined with synovial membrane & moistened with synovial fluid to facilitate movement

Answer 24

tendon sheaths

Question 25

prefixes sarco & myo

Answer 25

muscle

Question 26

Each skeletal muscle fiber is filled with 2 kinds of very fine, threadlike structures called what

Answer 26

Thick & thin myofilaments

Question 27

What protein forms thick myofilaments

Answer 27

myosin

Question 28

What protein forms thin myofilaments

Answer 28

actin

Question 29

What is the basic functional unit of skeletal mucscle

Answer 29

sarcomere

Question 30

What is the basic contractile unit of skeletal muscle

Answer 30

myofibrils

Question 31

What is the basic building block of compact bone

Answer 31

collegen fibril

Question 32

What separates sarcomeres from each other

Answer 32

z lines

Question 33

Muscle contraction causes the what to slide toward each other & shorten the sarcomere

Answer 33

thick & thin myofilaments

Question 34

What explains how a skeletal muscle contracts

Answer 34

Sliding filament model

Question 35

What mineral must be present for contraction to take place

Answer 35

calcium

Question 36

The energy used for muscle contraction is what

Answer 36

glucose

Question 37

Name the primary functions of the muscular system

Answer 37

movement, posture & heat production