Other Animal Tissues Types of animal tissues 4
- Slides: 9
Other Animal Tissues Types of animal tissues 4) Nervous tissue 1) Epithelial tissue 2) Connective tissue 3) Muscular tissue 1) Proper a) Loose c) Fibrous b) Adipose 2) Skeletal 3) Blood b) Cartilage a) Bone b) Cardiac a) Skeletal c) Smooth
2 - Skeletal Connective Tissues A- Bone Produces solid matrix of calcium phosphate and collagen fibers. Each osteon (Haversian systems) has a central canal containing blood vessels and nerves. Bone is harder than cartilage. The functions of bone are support, movement, organs, protection mineral of storage internal (calcium, phosphate) and blood cell development.
B- Cartilage Support soft tissues (nose, ear, trachea and vertebral discs). Sliding areas for joints, facilitate bone movements. The mature (adult) cell in cartilage is a chondrocyte ﺧﻠﻴﺔ ﻏﻀﺮﻭﻓﻴﺔ Cells are found in Lacunae (gap) within the matrix. Fibers may be elastic or non-elastic
3 - Blood (Vascular Tissue) The matrix is a liquid called plasma (55%): v 90% water v 10% proteins, hormones, vitamins, nutrients etc. There are three types of blood cells (45%). Blood cells Functions 1 - Erythrocytes (Red Blood Cells) Carry oxygen 2 - Leucocytes (White Blood Cells) Defense against microbe 3 - Platelets: blood clotting
Third: Muscular tissues Characterized by 1. Tissue with cells having muscle fibers specialized for contraction. 2. It has large numbers of myofibrils made of the contractile proteins actin and myosin
Types of Muscular Tissues There are three types of muscular tissues in the vertebrate body. 1 - Skeletal Muscles ﺍﻟﻌﻀﻼﺕ ﺍﻟﻬﻴﻜﻠﻴﺔ § It attaches to bones by tendons § Responsible for voluntary movements § Also called striated muscles 2 - Cardiac muscles ﺍﻟﻌﻀﻼﺕ ﺍﻟﻘﻠﺒﻴﺔ § It is found in the wall of the heart. § Cardiac muscles are branched. § Intercalated disc 3 - Smooth muscles ﺍﻟﻌﻀﻼﺕ ﺍﻟﻤﻠﺴﺎﺀ § No striations. § It is found in the walls of the digestive system, urinary bladder, arteries, and other internal organs. § The shape of the cells are spindle-shaped ﺍﻟﺸﻜﻞ ﺍﻟﻤﻐﺰﻟﻲ
Fourth: Nervous tissues ﺍﻷﻨﺴﺠﺔ ﺍﻟﻌﺼﺒﻴﺔ Nervous tissue is the main component of the nervous system. The functional unit of nervous tissue is the neuron, or nerve cell. It consists of three parts: a cell body, a single axon and dendrites. Dendrites transmit nerve impulses from their tips toward the rest of the neuron. Axons transmit impulses toward another neuron, muscles or glands.
