Skeletal System-Exam 2

Question 1

How many bones are in the vertebral column? What are the functions of the vertebral column?

Answer 1

There are 26 bones in the vertebral column and the funtions include:

• Provides support for the body
• Supports weight of the head
• Helps maintain upright position
• Holds spinal chord and provides passage way for the nerves

Question 2

Name the parts of both the atlas and axis. What are the significance of both and which section of the vertebral column are they in?

Answer 2

These are both located in the cervical vertebra.

• The Atlas: The very first vertebra which is articulated to the Occiputal bone and is responsible for keeping your head up
• The Axis: During developement the body of the atlas fuses to the 2nd vertebra which is the “axis.” This vertebra is responsible for the movement of your neck.

Question 3

How many bones are in the thoracic vertebra and which bones are these articulated to?

Answer 3

There are 12 bones in the thoracin vertebra and these articulate to the ribs

Question 4

How many lumbar vertebras are there and what is their main responisbility?

Answer 4

There are 5 lumbar vertebra and they are responsible for bearing the weight of the body

Question 5

What is another name for the sternum, and what was the sternum compared to in lecture? Also, name the 3 parts of the sternum.

Answer 5

The sternum is also called the breast bone. It was compared to a sword in class and the three parts of the sternum are the manubrium, body, and the xynoid process.

Question 6

Explain the following:

1. True Ribs
2. False Ribs
3. Floating Ribs

Answer 6

1. True ribs: These ribs are #’s 1-7. The ones that connect to the sternum
2. False ribs: These are ribs #8-12. The ones that do not attach to the sternum
3. Floating ribs: The last 2 ribs that have no connection to the sternum and they to not serve a real purpose(sometimes people have these removed)

Question 7

Identify the following parts of “ The cage”

Answer 7

Question 8

How many bones are considered to be in the “Upper Limb Region” of the body and what are they?

Answer 8

There are 60 bones total and they are:

1. Humerus(2)
2. Radius(2)
3. Ulna(2)
4. Hands (54)
   
   1. Carpus(16)
   2. Metacarpals(10)
   3. Phalanges (28)

Question 9

How many bones are there in the” Lower Limbs Region” and what are they?

Answer 9

There are 60 bones in the lower region and they are

1. Femur (2)
2. Patella (2)
3. Tibia (2)
4. Fibula (2)
5. Foot (52)
   
   1. Tarsus (7)
   2. Metatarsus (10)
   3. Phalanges (14)

Question 10

What type of tissue is bone considered to be, what is it made up of, and what role does it play in the body?

Answer 10

Bone is the strongest type of connective tissue and is made up of calcium phosphate and calsium carbonate. The bone has many functions such as

Homeostasis ◦ Mineral balance + Storage  Calcium and Phosphate  Protection ◦ Organ coverings  Support ◦ Weight  Movement ◦ Levers  Blood cell formation ◦ Hematopoiesis

Question 11

label the parts of the skull

Answer 11

Question 12

label the lateral view of the skull

Answer 12

Question 13

superior view of the inferior side of skull

Answer 13

Question 14

label the shoulder girdle

Answer 14

Question 15

label the pelvis

Answer 15

Question 16

What role does the pelivs play in the body

Answer 16

The body bears the weight of the upper body as well as protects the lower intestines, reproductive organs, and bladder.

Question 17

label the following brachial bone

Answer 17

Question 18

label the following scapula

Answer 18

Question 19

What is the olcranon fossa and what is its’ significance?

Answer 19

the cavity where the forearm rotates and that the elbow is connected. Its how we get the movement in our elbow.

Question 20

label the forearm bone

Answer 20

Question 21

Label the sections of the hand

Answer 21