In anatomical position, the human is sitting with the head turned to the side, the upper limbs hang in a natural position at the side of the body, and the feet are slightly apart, with the toes pointing forward.
The mammary region is visible only on the posterior/dorsal body surface.
The term femoral pertains to the thigh.
The surface of the human body faces forward, either dorsal or ventral, depending on the region.
The nucleus, plasma membrane and endoplasmic reticulum are the three major regions of cells that can readily be seen with a light microscope.
The nucleus of the cell contains its genes, which are sections of DNA.
The vulva consists of the mons pubis, labia majora and minora, clitoris, urethral and vaginal orifices, hymen, and greater vestibular glands.
The vulva contains the clitoris and urethral and vaginal orifices.
The vulva consists of the labia majora and minora.
The canal that extends from the vestibule to the uterus is referred to as the vagina.
A diamond-shaped region spanning the area between anterior labial folds and anus is referred to as the vulva.
The plasma membrane allows nutrients to enter the cell and keeps undesirable substances out of the cell, it also allows wastes to pass out of the cell and keeps valuable cell proteins inside the cell, a property known as selective permeability.
Centrioles are not considered to be a cytoskeletal element.
The lysosome is an organelle that digests other worn-out organelles and foreign substances that have entered the cell.
Selective (or differential) permeability allows nutrients to enter cells, keeps cellular wastes inside cells, prevents undesirable wastes from entering cells, and keeps valuable proteins inside cells.
Membrane transport may be passive or active.
The skin has a function in preventing dehydration.
The skin has an epithelial layer and a connective tissue layer.
The cells in the stratum corneum layer of the epidermis are dead, and their flat, scale-like remnants are filled with keratin.
A prime mover (agonist) is primarily responsible for a movement.
Depressor anguli oris is a muscle used in smiling.
Bones of the skeleton are connected at junctions called articulations.
Fibrocartilage supports the external ear and keeps it firm but flexible.
Muscles are named based on the action of the muscle.
Orbicularis oris is a muscle that closes the eyes, allowing you to wink or blink.
Epithelial cells are specialized to protect, support, and bind together other tissues.
Hyaline cartilage is the most common type of skeletal cartilage.
The skin helps regulate temperature.
Orbicularis oculi is a muscle that compresses the cheek when you whistle.
A freckle is a concentrated spot of melanin pigment.
In addition to supporting and protecting the body, the skeleton provides a function as well.
The skeleton is constructed of two types of tissue, dense connective tissue and blank.
The skin synthesizes vitamin C.
From deep to superficial, the layers of the epidermis of thin skin are stratum basale, stratum spinosum, stratum granulosum, stratum corneum.
A membrane transport process is active if it requires a concentration gradient, a pressure difference, energy provided by ATP, or kinetic energy of molecules.
Molecules move through the lipid portion of the plasma membrane by simple diffusion.
Insulin, aldosterone, growth hormone, and thyroid hormone are examples of endocrine gland hormones.
Hormones released from the pituitary gland include ADH and oxytocin.
The component of blood plasma that includes molecules important for body defense, osmotic balance, and lipid transport is plasma proteins.
The major pumping chambers of the heart are the right atrium and ventricle.