A&P Quiz 8: Skeleton Flashcards

Questions and Answers

Red bone marrow functions in the formation of ____________.

red blood cells, white blood cells, and platelets.

The presence of an epiphyseal plate indicates that ______________.

the bone is lengthening

A bone lengthens as a result of __________.

increased activity within the epiphyseal plate

What are osteoclasts?

cells that break down bone matrix Signup and view all the answers

What cell found in bone functions to deposit bony matrix?

osteoblast Signup and view all the answers

Articular cartilage is __________.

hyaline cartilage Signup and view all the answers

At what age are nearly all bones completely ossified?

25 years Signup and view all the answers

The calcaneus bone of the foot is an example of __________.

a short bone Signup and view all the answers

Which of the following is NOT associated with spongy bone?

Osteons Signup and view all the answers

What happens when the epiphyseal plate is ossified?

Lengthening of the bone is no longer possible Signup and view all the answers

Compact bone has _ and spongy bone has __.

osteons; trabeculae Signup and view all the answers

Which of the following bone shapes is stated with the wrong example?

Flat bone - thigh bone Signup and view all the answers

Based on their shape, the bones of the cranium can be classified as what type of bone?

flat bones Signup and view all the answers

What describes a female's pelvis compared to a male's pelvis?

A cavity that is wider in all dimensions, with lighter bones. Signup and view all the answers

The osteocytes in compact bone are arranged within cylinder-shaped units called ____________.

osteons Signup and view all the answers

Osteoblasts are , whereas osteocytes are ____.

bone-forming cells; mature bone cells Signup and view all the answers

The zygomatic bone is an example of a(n) _________________.

irregular bone Signup and view all the answers

Which of the following does NOT describe the functions of the skeletal system?

It generates the movements of the limbs Signup and view all the answers

The axial skeleton includes __________.

skull, hyoid bone, thoracic cage, and vertebral column. Signup and view all the answers

Which of the following are not components of the pelvic girdle?

Femur Signup and view all the answers

Exercise _ and ___ bones.

thickens; strengthens Signup and view all the answers

What is an organ that is protected by bones of the axial skeleton?

the heart Signup and view all the answers

What vitamin is necessary for proper absorption of calcium in the small intestines?

Vitamin D Signup and view all the answers

The femur is __________.

the longest bone in the body Signup and view all the answers

Which of the following is(are) an example of an intramembranous bone?

broad, flat skull bones Signup and view all the answers

Study Notes

Bone Marrow and Blood Cells

Red bone marrow is responsible for the formation of red blood cells, white blood cells, and platelets.

Bone Growth

The presence of an epiphyseal plate indicates ongoing bone lengthening.
Increased activity within the epiphyseal plate leads to bone lengthening.

Bone Cells

Osteoclasts are cells that break down bone matrix, playing a crucial role in bone resorption.
Osteoblasts are bone-forming cells essential for the deposition of bony matrix and growth of bone tissue.
Osteocytes are mature bone cells found within bone tissue, located in structures called osteons.

Bone Structure

Articular cartilage is a type of hyaline cartilage that covers joint surfaces.
Compact bone consists of osteons, while spongy bone contains trabeculae.

Ossification and Bone Shape

Nearly all bones are completely ossified by the age of 25 years.
The calcaneus bone is classified as a short bone.

Spongy vs. Compact Bone

Osteons are associated with compact bone, whereas trabeculae are unique to spongy bone. Osteons are not found in spongy bone.

Bone Classification

Bones of the cranium can be classified as flat bones.
The zygomatic bone is noted as an irregular bone.

Pelvis Structure

Female pelvis is characterized by a wider cavity and lighter bones compared to the male pelvis.

Skeletal System Functions

The skeletal system protects vital organs, stores inorganic salts, and interacts with muscles for movement, but does not generate limb movements.

Axial Skeleton

The axial skeleton comprises the skull, hyoid bone, thoracic cage, and vertebral column.

Pelvic Girdle Components

The pelvic girdle consists of hip bones (coxal bones) and the sacrum but does not include the femur.

Effects of Exercise

Regular exercise thickens and strengthens bones, contributing to overall skeletal health.

Nutritional Aspects

Vitamin D is essential for proper calcium absorption in the small intestines, crucial for bone health.

Longest Bone

The femur is recognized as the longest bone in the human body.

Intramembranous Bones

Broad, flat bones of the skull are categorized as intramembranous bones, formed directly from mesenchymal tissue.

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Description

Test your knowledge of the human skeleton with this A&P Quiz 8 focused on key functions and components such as red bone marrow, osteoclasts, and bone lengthening. Perfect for students studying anatomy and physiology.