Untitled. Alveolar Epithelial Cells Are Critical in Protection of the Respiratory Tract by Secretion of Factors Able To Modulate the Activity of Pulmonary Macrophages and Directly Control Bacterial Growth. The respiratory epithelium is a physical and functional barrier actively involved in the clearance of environmental agents.
The alveolar compartment is lined with membranous pneumocytes, known as type I alveolar epithelial cells (AEC I), and granular pneumocytes, type II alveolar epithelial cells (AEC II). AEC II are responsible for epithelial reparation upon injury and ion transport and are very active immunologically, contributing to lung defense by secreting antimicrobial factors. Untitled. Areolar Tissue - Structure and Functions of Human Tissue Types. Note: This page is part of the section about the structure and function of different Tissue Types, which is related to the section about Histology and Cells (incl. structure of animal cells, cell division, mitosis, meiosis).
This "Tissue Types" section is included to complete description of the knowledge of "Histology - The Cell" required by some courses in First-Level Anatomy and Physiology. To read about other tissue types see the list of on the left. Areolar Tissue is a common form of loose connective tissue. What are some types of respiratory system tissue? Anatomy and Physiology: The Relationships of the Respiratory System. Place your hand over your chest, take a deep breath, and then let it out.
Of course you already know that your lungs fill with air when you breathe, but did you know that your respiratory system does more than simply move oxygen into and out of your lungs? The structures of the respiratory system interact with structures of the skeletal, circulatory, and muscular systems to help you smell, speak, and move oxygen into your bloodstream and waste out of it. Standard Grade Bitesize Physical Education - Structure and function : Revision, Page 5. Diaphragm - Anatomy Pictures and Information. [Continued from above] . . .
The lungs are enclosed in the thoracic cavity by the rib cage on the front, back, and sides with the diaphragm forming the floor of the cavity. When we inhale, the diaphragm contracts and is drawn inferiorly into the abdominal cavity until it is flat. At the same time, the external intercostal muscles between the ribs elevate the anterior rib cage like the handle of a bucket. The thoracic cavity becomes deeper and larger, drawing in air from the atmosphere. Interactive Anatomy Guide. [Continued from above] . . . act as the functional units of the respiratory system by passing oxygen into the body and carbon dioxide out of the body.
Finally, the muscles of respiration, including the diaphragm and intercostal muscles, work together to act as a pump, pushing air into and out of the lungs during breathing. Nose and Nasal CavityThe nose and nasal cavity form the main external opening for the respiratory system and are the first section of the body’s airway—the respiratory tract through which air moves. The nose is a structure of the face made of cartilage, bone, muscle, and skin that supports and protects the anterior portion of the nasal cavity.