Questions and Answers
What is the thoracic cavity also known as?
How many pairs of ribs are there?
Twelve pairs
What are the first seven pairs of ribs called?
True Ribs
How many pairs of false ribs are there?
Signup and view all the answers
What are the last two pairs of ribs known as?
Signup and view all the answers
What is the sternum?
Signup and view all the answers
What are the three parts of the sternum?
Signup and view all the answers
What bone forms the upper portion of the sternum?
Signup and view all the answers
What forms the middle portion of the sternum?
Signup and view all the answers
What forms the lower portion of the sternum?
Signup and view all the answers
What do shoulders form?
Signup and view all the answers
What is the collarbone called?
Signup and view all the answers
What is the shoulder bone known as?
Signup and view all the answers
What is the acromion?
Signup and view all the answers
What bone is referred to as the upper arm?
Signup and view all the answers
What is the smaller, shorter bone in the forearm called?
Signup and view all the answers
What is the larger, longer bone in the forearm?
Signup and view all the answers
What is the large projection on the upper end of the ulna called?
Signup and view all the answers
What are the parts of the arm?
Signup and view all the answers
Eight ___________ form the wrist.
Signup and view all the answers
Five ______________ form the palms of the hand.
Signup and view all the answers
What are the bones of the fingers called?
Signup and view all the answers
What protects the spinal cord?
Signup and view all the answers
What are the structures of the vertebrae?
Signup and view all the answers
What is the anterior portion of the vertebrae called?
Signup and view all the answers
What is the posterior portion of the vertebrae called?
Signup and view all the answers
What is the opening in the middle of the vertebra allowing for passage of the spinal cord called?
Signup and view all the answers
What are the types of vertebrae?
Signup and view all the answers
What set of vertebrae forms the neck?
Signup and view all the answers
How many thoracic vertebrae are there?
Signup and view all the answers
What set of vertebrae is the largest and strongest?
Signup and view all the answers
What forms the lower portion of the back?
Signup and view all the answers
What is the tailbone known as?
Signup and view all the answers
What protects the internal organs and supports lower extremities?
Signup and view all the answers
What are the parts of the pelvis?
Signup and view all the answers
What forms the back and sides of the pubic bone?
Signup and view all the answers
What is the articulation between sacrum and posterior portion of ilium called?
Signup and view all the answers
What forms the lower posterior portion of the pubic bone?
Signup and view all the answers
What forms the anterior portion of the pubic bone?
Signup and view all the answers
What unites the left and right pubic bones?
Signup and view all the answers
What is the large circular cavity in each side of the pelvis called?
Signup and view all the answers
What are the largest bones in the body?
Signup and view all the answers
What are the parts of the knees?
Signup and view all the answers
What is the kneecap called?
Signup and view all the answers
Study Notes
Thoracic Cavity
- Also known as the rib cage, it protects the heart and lungs.
- Composed of ribs, sternum, and the upper portion of the spinal column extending from the neck to the diaphragm.
Ribs
- Consist of twelve pairs that attach to the thoracic vertebrae posteriorly.
Types of Ribs
- True Ribs: First seven pairs that attach anteriorly to the sternum.
- False Ribs: Three pairs following true ribs, connecting to cartilage linking them to the sternum.
- Floating Ribs: Last two pairs that only attach posteriorly to vertebrae without anterior connections.
Sternum
- A flat bone located in the middle of the chest, which has three parts.
Parts of the Sternum
- Manubrium: Upper portion of the sternum.
- Body: Middle portion of the sternum.
- Xiphoid Process: Lower portion made of cartilage.
Shoulders
- Composed of the pectoral girdle which supports the arms and hands, consisting of the clavicle, scapula, and acromion.
Clavicle
- Known as the collarbone, it connects the manubrium to the scapula.
Scapula
- Also referred to as the shoulder bone.
Acromion
- An extension of the scapula that forms the highest point of the shoulder.
Arm Bones
- Humerus: Upper arm bone.
- Radius: Smaller, shorter bone in the forearm.
- Ulna: Larger, longer bone in the forearm, with the olecranon process being its large projection.
Wrist and Hand
- Carpal Bones: Eight bones that form the wrist and five metacarpal bones form the palms of the hand.
- Phalanges: Fourteen bones of the fingers; each finger has three bones, while the thumb has two.
Spinal Column
- Protects the spinal cord and supports the head, consisting of 26 vertebrae.
Structures of Vertebrae
- Body: Anterior portion providing strength.
- Lamina: Posterior portion of the vertebra.
- Vertebral Foramen: Opening allowing passage of the spinal cord.
Types of Vertebrae
- Cervical Vertebrae: Set of 7 (C1-C7), forming the neck.
- Thoracic Vertebrae: Set of 12 (T1-T12), each with a pair of ribs attached.
- Lumbar Vertebrae: Set of 5 (L1-L5), largest and strongest, bearing most body weight.
- Sacrum: Forms lower back, fused from five separate bones at birth.
- Coccyx: Known as the tailbone, made of four fused bones at the spine's end.
Pelvis
- Protects internal organs and supports lower extremities.
Parts of the Pelvis
- Ilium: Forms the back and sides of the pelvic bone.
- Sacroiliac: Joint between sacrum and ilium.
- Ischium: Lower posterior portion supporting body weight when sitting.
- Pubis: Anterior portion of the pelvic bone.
- Pubic Symphysis: Cartilaginous joint uniting left and right pubic bones.
- Acetabulum: Circular cavity in the pelvis connecting with the femur to form the hip joint.
Lower Limb
- Femurs: The largest bones in the body.
- Patella: Known as the kneecap.
- Popliteal: Relating to the area behind the knee.
- Cruciate Ligaments: Ligaments in the knee providing stability.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Explore key concepts related to the skeletal system in this quiz based on Medical Terminology Chapter 3. The flashcards cover critical terms such as the thoracic cavity, ribs, and true ribs, emphasizing their definitions and anatomical significance.
