Week 4 - QUIZZES

Question 1

A motor neuron and all the muscle fibers it stimulates form a…

Answer 1

motor unit

Question 2

Excitability refers to the ability of a cell to…

Answer 2

respond to a stimulus by producing an electrical signal

Question 3

Muscle contraction is triggered by impulses carried over…

Answer 3

motor neurons

Question 4

Muscles generate heat, stabilize the body positions and..

Answer 4

produce body movements

Question 5

Myofibrils are composed primarily of…

Answer 5

Actin and myosin

Question 6

What properties of muscle tissue has its ability to generate tension to do work?

Answer 6

Contractility

Question 7

The motor end plate is part of a…

Answer 7

Skeletal muscle cell at the synapse

Question 8

Which type of muscle tissue is involuntary, slow in contracting, and able to regenerate considerably better than other types of muscle?

Answer 8

Smooth muscle

Question 9

A muscle which functions as the prime mover is called a

Answer 9

Agonist

Question 10

An adductor muscle…

Answer 10

Moves a part of the body toward the midline

Question 11

Antagonistic muscle groups

Answer 11

Perform opposite functions

Question 12

In order for skeletal muscles to cause movement they must…

Answer 12

cross at least one joint

Question 13

One of the largest, heaviest muscles of the body which is the chief extensor of the femur is the

Answer 13

Gluteus maximus

Question 14

The Achilles tendon attaches (inserts) on the

Answer 14

calcaneus

Question 15

The hamstring muscles act to

Answer 15

flex the leg and extend the thigh

Question 16

The masseter muscle is located in the

Answer 16

Head

Question 17

The medial compartment of the thigh contains muscles that _______ the thigh.

Answer 17

Adduct

Question 18

The preferred site of injection in the buttocks region is the

Answer 18

gluteus medius

Question 19

The strength and stability of the shoulder joint is provided by the

Answer 19

muscles and tendons of the rotator cuff

Question 20

Tendinitis of the tibialis anterior can result in a painful condition commonly known as

Answer 20

shinsplints

Question 21

Which muscle flexes the vertebral column?

Answer 21

rectus abdominis

Question 22

A bone which has an epiphysis at each end is a

Answer 22

Long bone

Question 23

A callus is

Answer 23

a mass of repair tissue that bridges the ends of a broken bone

Question 24

As epiphyseal cartilage cells stop dividing and are replaced by bone, the result is a bony structure called the

Answer 24

epiphyseal line

Question 25

Compact bone...

Answer 25

is arranged in units called osteons

Question 26

Hemopoiesis occurs in..

Answer 26

red marrow

Question 27

If epiphyseal plates are visible in an X-ray the bone is...

Answer 27

still growing in length

Question 28

In adults, lipids are stored in the

Answer 28

yellow marrow

Question 29

Osteoclasts:

Answer 29

break down the bone matrix

Question 30

Spongy bone is found in:

Answer 30

the epiphyses of long bones

Question 31

When blood calcium levels rise above normal, osteoclast activity is inhibited by the hormone

Answer 31

calcitonin

Question 32

When there is too little calcium in blood, which cells begin resorption of bone to release calcium to the blood?

Answer 32

osteoclasts

Question 33

What is found in the epiphyseal plate?

Answer 33

chondrocytes

Question 34

True or false: Vitamin D production is a function of the skeletal system

Answer 34

False

Question 35

During the later stages of pregnancy, hormones increase the flexibility of this joint to allow for the delivery of the fetus.

Answer 35

symphysis pubis

Question 36

The acetabulum....

Answer 36

is formed by the ischium, ilium and pubis

Question 37

The glenoid cavity is...

Answer 37

a depression for articulation with the head of the humerus

Question 38

The longest, heaviest, and strongest bone of the human skeleton is the

Answer 38

femur

Question 39

The pectoral girdle consists of the

Answer 39

scapula and clavicle

Question 40

The radius is located on the ___________ side of the forearm.

Answer 40

thumb

Question 41

When you sit, the part of the hip that touches the seat of the chair is the

Answer 41

ischial tuberosity

Question 42

An opening in a bone through which blood vessels and nerves pass is a..

Answer 42

foramen

Question 43

Besides the auditory ossicles, the only moveable bone of the skull is the...

Answer 43

mandible

Question 44

How many lumbar vertebrae are there in a normal vertebral column?

Answer 44

5 fused

Question 45

If a person slipped on the ice and hit in the back of the head, what bone might most likely be fractured?

Answer 45

Occipital bone

Question 46

Soft spots in the skull filled with fibrous connective tissue which will eventually be replaced by bone are called

Answer 46

fontanels

Question 47

Spinal nerves enter and leave the spinal cord through passages between the vertebrae called...

Answer 47

intervertebral foramina

Question 48

The foramen magnum is found in the...

Answer 48

occipital bone

Question 49

What type of bone is the sternum?

Answer 49

Flat bone

Question 50

Which bone of the skull articulates with (touches) the vertebral column?

Answer 50

Occipital bone

Question 51

What bone is not part of the skull?

Answer 51

Hyoid bone

Question 52

What is the opening between the vertebral arch and body of a vertebra that houses the spinal cord?

Answer 52

Vertebral foramen

Question 53

Which of the regions of the vertebral column has the greatest number of vertebrae?

Answer 53

Thoracic

Question 54

Which suture is found between the parietal bones?

Answer 54

Saggital

Question 55

Which type of bones of the body are slightly curved to absorb the stress of the body, and consist mostly of compact bone?

Answer 55

Long bones

Question 56

Which vertebrae are largest and strongest?

Answer 56

Lumbar