Domanda del libro di testo
Name the eight bones of the cranium.
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Ch. 5 The Skeletal System
Marieb13th EditionEssentials of Human Anatomy & PhysiologyISBN: 9780135624340
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TOC.tableOfContents
- Ch. 1 The Human Body: An Orientation23
- Ch. 2 Basic Chemistry22
- Ch. 3 Cells and Tissues20
- Ch. 4 Skin and Body Membranes13
- Ch. 5 The Skeletal System38
- Ch. 6 The Muscular System26
- Ch. 7 The Nervous System26
- Ch. 8 Special Senses12
- Ch. 9 The Endocrine System24
- Ch. 10 Blood22
- Ch. 11 Cardiovascular System29
- Ch. 12 The Lymphatic System and Body Defenses21
- Ch. 13 The Respiratory System7
- Ch. 14 The Digestive System and Body Metabolism13
- Ch. 15 The Urinary System23
- Ch. 16 The Reproductive System15
Marieb13th EditionEssentials of Human Anatomy & PhysiologyISBN: 9780135624340Non è quello che usi tu?Cambia libro di testo
Capitolo 5, Problema 13
What is yellow marrow? How do spongy and compact bone look different?
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Yellow marrow is a type of bone marrow primarily composed of adipose tissue (fat cells). It is found in the medullary cavity of long bones and serves as an energy reserve. Additionally, it can convert to red marrow under certain conditions, such as severe blood loss, to aid in blood cell production.
Spongy bone, also known as cancellous or trabecular bone, has a porous, lattice-like structure made up of trabeculae. These trabeculae are small, needle-like or flat pieces of bone that create spaces filled with red or yellow marrow. Spongy bone is typically found at the ends of long bones and in the interior of other bones, such as the vertebrae.
Compact bone, also known as cortical bone, has a dense and solid structure. It is organized into cylindrical units called osteons (or Haversian systems), which consist of concentric lamellae surrounding a central canal that contains blood vessels and nerves. Compact bone forms the outer layer of bones and provides strength and protection.
The visual difference between spongy and compact bone is that spongy bone appears porous and less dense, resembling a honeycomb, while compact bone looks smooth and solid under a microscope or in cross-section.
The functional difference is that spongy bone is designed to absorb stress and reduce the weight of the skeleton, while compact bone provides structural support and protection for the body.
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Yellow Marrow
Yellow marrow is a type of bone marrow primarily composed of adipose (fat) tissue. It serves as a fat storage area and is found in the central cavities of long bones. Unlike red marrow, which is responsible for blood cell production, yellow marrow plays a more supportive role in energy storage and can convert back to red marrow in cases of severe blood loss.
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3:39
Bone Marrow
Spongy Bone
Spongy bone, also known as cancellous bone, is characterized by a porous, lattice-like structure that provides strength while being lightweight. It is typically found at the ends of long bones and in the interiors of others, allowing for the storage of bone marrow and the absorption of shock. The spaces within spongy bone are filled with red marrow, which is crucial for hematopoiesis.
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3:43Compact and Spongy Bone
Compact Bone
Compact bone is the dense, outer layer of bone that provides strength and support. It is composed of tightly packed osteons, or Haversian systems, which are cylindrical structures that contain blood vessels and nerves. This type of bone is primarily found in the shafts of long bones and is essential for protecting the inner spongy bone and maintaining the overall structure of the skeleton.
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3:43Compact and Spongy Bone
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Match the bone markings listed on the right with their function listed on the left.
1. Attachment site for muscle or ligament
2. Forms a joint surface
3. Passageway for vessels or nerves
f. Tuberosity
542
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Domanda del libro di testo
Match the bone markings listed on the right with their function listed on the left.
1. Attachment site for muscle or ligament
2. Forms a joint surface
3. Passageway for vessels or nerves
e. Facet
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Domanda del libro di testo
What facial bone forms the chin? The cheekbone? The upper jaw? The bony eyebrow ridges?
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Domanda del libro di testo
Name two ways in which the fetal skull differs from the adult skull. A certain short-day plant flowers only when days are less than 12 hours long. Which of the following would cause it to flower?
a. A 9-hour night and 15-hour day with 1 minute of darkness after 7 hours
b. An 8-hour day and 16-hour night with a flash of white light after 8 hours
c. A 13-hour night and 11-hour day with 1 minute of darkness after 6 hours
d. A 12-hour day and 12-hour night with a flash of red light after 6 hours
1709
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Domanda del libro di testo
Match the bone markings listed on the right with their function listed on the left.
1. Attachment site for muscle or ligament
2. Forms a joint surface
3. Passageway for vessels or nerves
d. Process
473
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