Anatomical Terminology
Divides the body into left and right portions
Sagittal plane
The primary component of the plasma membrane
Phospholipids
Tissue type that covers surfaces and lines cavities
Epithelial tissue
The outermost layer of the skin
Epidermis
Two main types of bone tissue
Compact bone and spongy bone
Toward the midline of the body
Medial
Movement of molecules from high to low concentration
Diffusion
Thin epithelial tissue specialized for diffusion
Simple squamous epithelium
Pigment responsible for skin color
Melanin
Bone cells responsible for bone formation
Osteoblasts
The patella is ___ to the femur
Anterior
Why can oxygen cross the plasma membrane without a transport protein?
It is small and non polar
Connective tissue with collagen fibers arranged in parallel fashion
Dense regular connective tissue
Which skin layer contains blood vessels and sensory receptors?
Dermis
Which bone classification includes the femur?
Long bone
The wrist is ___ to the elbow and ___ to the fingers
Distal to the elbow; proximal to the fingers
Transport requiring ATP to move substances against their gradient
Active Transport
Why do epithelial tissues heal quickly?
They undergo rapid cell division (think skin)
Which epidermal layer contains actively dividing cells?
Stratum basale
Why is spongy bone found in the epiphyses of long bones?
It reduces weight and absorbs stress
Which plane would best show both kidneys in one section?
Frontal (coronal) plane
Why do ions require membrane proteins to cross the plasma membrane?
They are charged and cannot pass through the hydrophobic lipid bilayer
Which tissue type contains cells separated by an extracellular matrix, and why is this important?
Connective tissue; the matrix provides support, protection, and binding
Why does the epidermis rely on diffusion for nutrients?
It is avascular
Classify the vertebrae by bone type and justify the classification
Irregular bones due to complex shape