![]() Coronal section through cuboid, cuneiforms 1, 2, 3, and base of metatarsal 5. ( 1, tibialis posterior tendon 2, flexor hallucis longus tendon 3, tunnel of flexor digitorum longus and quadratus plantae 4, flexor digitorum longus tendon and quadratus plantae 5, flexor digitorum brevis 6, abductor digiti quinti muscle 7, abductor hallucis muscle 8, compartment of flexor digitorum brevis 9, medial plantar neurovascular bundle carried within the medial intermuscular septum 10, medial plantar neurovascular bundle 11, lateral plantar neurovascular bundle 12, intermediary component of central compartment 13, lateral intermuscular septum 14, medial intermuscular septum 15, peroneus longus tendon 16, peroneus brevis tendon 11, superficial investing thin fascia of lateral plantar neurovascular bundle 11′, transverse aponeurosis, thick, dividing the central compartment into superficial and intermediary compartments 18, calcaneus 19, cuboid 20, lateral cuneiform 21, middle cuneiform 22, medial cuneiform 23, navicular.)įigure 9.17 Section V. Oblique section calcaneocubonaviculo-cuneiforms. ![]() ( 1, tunnel of tibialis anterior tendon 2, superomedial band of inferior extensor retinaculum determining tunnel of extensor hallucis longus tendon and anterior tibial neurovascular bundle 3, tunnel of extensor digitorum longus 4, tunnel of peronei 5, tunnel of Achilles tendon 6, tunnel of flexor hallucis longus tendon 7, tunnel of posterior tibial neurovascular bundle 8, tunnel of flexor digitorum longus tendon 9, tunnel of tibialis posterior tendon 10, tibialis posterior tendon 11, flexor digitorum longus tendon 12, posterior tibial vessels 13, posterior tibial nerve 14, flexor hallucis longus tendon 15, Achilles tendon 16, posterior peroneal vessels 17, peroneus brevis tendon 18, peroneus longus tendon 19, extensor digitorum longus 20, anterior tibial neurovascular bundle 21, extensor hallucis longus tendon 22, tibialis anterior tendon 23, lateral malleolus 24, medial malleolus 25, talus.)įigure 9.16 Section V. Cross-section of ankle at 1 cm proximal to tip of medial malleolus. Small sacs are found extending from the walls of the terminalīronchii called respiratory bronchioles (R), that are lined byĪ ciliated cuboidal epithelium, and some non-ciliated cells called clara cells.Figure 9.10 Section 1. Muscle to contract, and reduce the diameter of the terminal bronchioles. Stimulation of the vagus nerve (parasympathetic) causes the smooth These have a layer smooth muscle surrounding their lumens. The final branches of the bronchioles are called terminal bronchioles. The epithelium is either columnar or cuboidal. There is no cartilage, or glands, some smooth muscle is still present, there are no goblet cells. Note that this is at a lower magnification than the three pictures above.This is the last part of the conducting portion of the respiratory system, and has the smallest diameter of all (less than 1mm). This picture shows a Terminal bronchiole (TB in the diagram). This helps to keep the lungs free of particles and bacteria. Transported upwards towards the pharynx by the cilia on the epithlium. The mucous, together with mucous from the gobletĬells traps particles from the air which are The watery secretions from the serous glands humidify the inspired air. The sub-mucosa contains glands which are mixed sero-mucous glands. Recoil of the trachea during inspiration and expiration, together The epithelium contains elastin, that plays a role in the elastic ![]() The epithelium is tall columnar pseudostratified The respiratory mucosa is made up of the epithelium and supporting The air, and to trap particles in mucous. The respiratory mucosa and submucosa are adapted to warm and moisten Together these hold the lumen of the trachea open, but allowįlexibility during inspiration and expiration. The trachealis muscle - a bundle of smooth muscle, and fibroelastic The gaps between the rings of cartilage are filled by Open by 20 tracheal cartilages, which are C-shaped rings of hyalineĬartilage. The trachea is a wide flexible tube, the lumen of which is kept ![]()
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