Muscle Histology

Structure of Cardiac Muscle

Diagram of a skeletal muscle myofibril showing Z lines, a sarcomere, M line, thin filaments, thick filaments, and a cross-sectional end view.

Skeletal Muscle

Microscopic image of pink smooth muscle fibres with elongated dark-stained nuclei and a pointer.

Smooth Muscle

Popular

Diagram of the menstrual cycle showing days 1–28, follicular and luteal phases, basal body temperature, and changing FSH, LH, estrogen, and progesterone levels.
Hormones and Regulation

Menstrual Cycle

by Grace Fitzgerald

Electrolytes

Calcium Regulation

by Bethany Moody

Diagram showing stimulation associated with a change in synapse strength and no stimulation associated with no change.
Synapses

Synaptic Plasticity

by Caroline Brewer and Aleksandra Lasica