Structural Organisation Mind Map

ANIMAL TISSUES
├── EPITHELIAL TISSUE
│   ├── Simple (1 layer)
│   │   ├── Squamous → blood vessels, alveoli → diffusion
│   │   ├── Cuboidal → kidney tubules → secretion/absorption
│   │   ├── Columnar → stomach, intestine → secretion/absorption
│   │   ├── Ciliated → trachea, oviducts → movement
│   │   └── Glandular → goblet cells, salivary glands → secretion
│   └── Compound (multiple layers)
│       └── Skin, pharynx, buccal cavity → PROTECTION
│
├── CONNECTIVE TISSUE (most abundant)
│   ├── Loose CT
│   │   ├── Areolar → fibroblasts + mast cells + macrophages
│   │   └── Adipose → adipocytes → fat storage
│   ├── Dense CT
│   │   ├── Regular → Tendons (muscle→bone) + Ligaments (bone→bone)
│   │   └── Irregular → Dermis → multi-directional resistance
│   └── Specialized CT
│       ├── Cartilage → chondrocytes in lacunae → chondroitin sulfate
│       │   ├── Hyaline (trachea)
│       │   ├── Elastic (ear pinna)
│       │   └── Fibrocartilage (intervertebral discs)
│       ├── Bone → osteocytes → calcium phosphate → Haversian system
│       └── Blood → RBCs/WBCs/Platelets → plasma matrix
│
├── MUSCULAR TISSUE
│   ├── Skeletal → striated + voluntary + multinucleated + cylindrical
│   ├── Smooth → non-striated + involuntary + uninucleated + spindle
│   └── Cardiac → striated + involuntary + intercalated discs + autorhythmic
│
├── NEURAL TISSUE
│   ├── Neurons → cyton + dendrites (receive) + axon (transmit)
│   └── Neuroglia
│       ├── Schwann cells → PNS myelin
│       ├── Oligodendrocytes → CNS myelin
│       ├── Astrocytes → blood-brain barrier
│       └── Microglia → CNS immune cells
│
└── FROG ANATOMY
    ├── Heart → 3 chambers (2 atria + 1 ventricle) + sinus venosus + truncus arteriosus
    ├── Respiration → cutaneous + buccopharyngeal + pulmonary
    ├── Excretion → ureotelic + mesonephric kidneys
    ├── Nervous → 10 cranial nerve pairs
    └── Reproduction → external fertilization; male = vocal sacs + nuptial pads + Bidder's canal