ATI Science- Muscle/Skeletal System

Question 1

Type of muscle tissue arranged disorderly as it is not striated

Answer 1

smooth muscle

Question 2

3 types of muscle tissue

Answer 2

skeletal, cardiac, smooth

Question 3

Properties of muscle tissue

Answer 3

excitability, contraction; elongate

Question 4

property of an electric gradient which can reverse when stimulated

Answer 4

excitability

Question 5

property where muscle tissue has the ability to shorten

Answer 5

contraction

Question 6

property where muscle tissue has the ability to relax

Answer 6

elongate

Question 7

VOLUNTARY, striated muscle that work in pairs to move various parts of the skeleton

Answer 7

skeletal muscle

Question 8

INVOLUNTARY, non striated muscle that is found in walls of internal organs like stomach/blood vessles

Answer 8

smooth muscle

Question 9

INVOLUNTARY, striated muscle found only in the heart

Answer 9

cardiac muscle

Question 10

Skeletal muscles consist of muscle fibers. Each fiber contains a bundle of _______ composed of contractile units called _______

Answer 10

myofibrils; sacromeres

Question 11

Myofibrils contain two protein ________ ; one is ______ other is ______

Answer 11

myafilament; thick; thin

Question 12

thick filament composed of protein

Answer 12

myosin

Question 13

thin filament composed of protein

Answer 13

actin

Question 14

Striations in muscle caused by____

Answer 14

overlapping of thick and thin filament s

Question 15

How does sarcomere shorten? (skeletal muscle attraction)

Answer 15

When actin (thin) slides over mysoin (thick)

Question 16

electrical signal aka

Answer 16

action potential

Question 17

When an action potential reaches a muscle fiber, what is released?

Answer 17

Calcium ions

Question 18

What provides energy necessary for contraction?

Answer 18

ATP released from glucose

Question 19

What allows myosin and actin to bind in the sliding filament?

Answer 19

Calcium ions

Question 20

How many bones in the human body?

Answer 20

206 bones

Question 21

bones that makeup central core of body (skull (cranial and facial bones), back and ribcage

Answer 21

axial skeleton (80 bones)

Question 22

bones that makeup upper and lower extremities, which include the shoulder girdle and pelvis

Answer 22

appendicular skeleton (126 bones)

Question 23

part of the body where two or more bones meet to allow movement

Answer 23

joints

Question 24

Produces red and white blood cells

Answer 24

red bone marrow

Question 25

Bone marrow that stores fat

Answer 25

yellow bone marrow

Question 26

minerals stored by skeletal system

Answer 26

calcium and phosphorus

Question 27

Body functions of skeletal system

Answer 27

movement, minerals storage, support, protection , blood cell formation

Question 28

Disease classified as deterioration in bone regeneration

Answer 28

osteoporosis

Question 29

most common, freely movable joint (found at shoulder and knees)

Answer 29

synovial joints

Question 30

fill spaces between some bones and restrict movement (between vertebrae)

Answer 30

cartilaginous joints

Question 31

fixed or immovable joints as they do not allow any movement between the bones

Answer 31

fibrous joints

Question 32

connective bone tissue that forms outer layer of long bones; dense and solid; provides strength and protection

Answer 32

compact bone aka cortical bone

Question 33

connective bone tissue that forms the inner layer of flat and irregular bones, has a porous structure, and contributes to shock absorption and reducing weight

Answer 33

spongy bone aka cancellous

Question 34

type of bone embedded in tendons

Answer 34

sesamoid bone