- What is the only bone that does not articulate, or form a joint, with another bone?
- A __________ or Haversian system is a complex composed of a central canal with blood vessel and rings of bone matrix. This is the structural unit of compact bone.
- _________ covers the end of a long bone and provides a smooth surface that decreases friction at joints
- Concentric rings of the bone matrix are called?
- Tough fibrous covering of a bones diaphysis
- What are the two types of osseous (bone) tissue?
- Osteocytes can be found in the tiny cavities called?
- The small needlelike pieces of bone that make up spongy bone are called?
- Composed of hyaline cartilage, also known as the growth plate. Long bone grows here during adolescence.
- Forms at the end of puberty when bone stops growing in length.
- How many bones are in the adult human body?
- This cavity in the long bone contains red and yellow bone marrow.
- what structure is used for gas exchange in agnathans?
- The salivary glands, liver, and pancreas are not part of the digestive tract but all play a role in digestion. They aredescribed as accessory organs. Describe the specific role each plays
- do echinoderms have a centralized nervous system?
- what are two gas exchange surfaces for amphibians
- what adaptation do mammals have that helps them to do gas exchange in a way that meets the high demand for oxygen?
- What muscular structure is located between the thoracic and abdominal cavities?
- what adaptation do birds have that enables them to do gas exchange in a way that meets the high demand for oxygen?
- how many chambers in the heart of a fish