43 results found

Search Results for: cylindrical

Conjugation

Conjugation generally means the joining or coming together (union), such as in certain unicellular organisms (some bacteria,... Read More

Nematoda

Definition noun (taxonomy) A phylum comprised of roundworms characterized mainly by their smooth, cylindrical, thread-like... Read More

Erlenmeyer flask

Erlenmeyer flask (Science: apparatus) a piece of chemistry laboratory equipment, a container often made of glass, which has... Read More

Osteon

What is an Osteon? In osteology (the study of bony structures and skeleton), the osteons (or Haversian systems) are the... Read More

Capsid

Capsid Definition A capsid is a three-dimensional proteinaceous capsular shell around a virus that encloses the viral... Read More

Shaft

shaft 1. The slender, smooth stem of an arrow; hence, an arrow. His sleep, his meat, his drink, is him bereft, That lean he... Read More

Dendrite

Dendrite Definition Dendrites are the protoplasmic projections from the neuron cells that receive the electrochemical... Read More

Involuntary muscle

A muscle act typically either under the control of the will or without conscious control. Muscles that can be controlled at... Read More

Myoblast

Myoblast Definition A myoblast is a progenitor cell that when it stops dividing enters myogenesis to develop into a myocyte... Read More

Nematocyst

All organisms are composed of millions of cells. Many cells serve specific purposes and are specialized to do distinct... Read More

Sperm cell

Definition noun, plural: sperm cells A mature male gamete or reproductive cell; spermatozoon. Supplement A single sperm cell... Read More

Hinge joint

Definition noun, plural: hinge joints A synovial joint in which the transversely cylindrical convexity on one bone fits into... Read More

Muscular system

Muscular System Definition What is the muscular system? The muscular system is a system that includes muscle cells and... Read More

Xylem parenchyma

Definition noun Parenchyma cells in the xylem tissue and are involved mainly in the storage of carbohydrates, oils, and... Read More

Stems

External Form of a Woody Twig A woody twig, or stem, is an axis with leaves attached. The leaves are arranged in various... Read More

Producer

Producer Definition Producers are organisms that can produce organic matter using an external energy source. They include... Read More

Sarcolemma

Sarcolemma Definition What is the sarcolemma? It is the thin, transparent, extensible plasma membrane of the muscle cell.... Read More

Peristalsis

What is Peristalsis? Peristalsis is the series of involuntary, wave-like muscle movements in the cylindrical, hollow tube... Read More

Ascaris

Definition noun A genus comprised of species of parasitic nematodes characterized by resembling earthworms and having... Read More

Pussy

Pussy 1. A pet name for a cat; also, an endearing name for a girl. 2. A catkin of the pussy willow. 3. The game of tipcat;... Read More

Myocardium

Myocardium Definition What is the myocardium of the heart?  It is the muscular middle layer of the heart that is... Read More

Velvet worm

Definition noun, plural: velvet worms Any of the invertebrates belonging to the phylum Onychophora, and characterized by... Read More

Well

well 1. Good in condition or circumstances; desirable, either in a natural or moral sense; fortunate; convenient;... Read More

Anthozoan

Anthozoan (Science: zoology) Pertaining to the anthozoa. One of the anthozoa. Definition noun, plural: anthozoans Any of the... Read More

Absorption

Absorption can be defined as the process of assimilating substances across the intestinal epithelial cells or the tissues... Read More

Rod

Rod 1. A straight and slender stick; a wand; hence, any slender bar, as of wood or metal (applied to various purposes).... Read More

Xylem

Xylem Definition Xylem is defined as a plant tissue that transfers water and nutrients from roots to all over the plant... Read More

Pair

Pair 1. To be joined in paris; to couple; to mate, as for breeding. 2. To suit; to fit, as a counterpart. My heart was made... Read More

Shell

shell 1. A hard outside covering, as of a fruit or an animal. Specifically: The covering, or outside part, of a nut; as, a... Read More

Bell

Bell 1. a hollow metallic vessel, usually shaped somewhat like a cup with a flaring mouth, containing a clapper or tongue,... Read More

Eubacteria

Eubacteria are prokaryotic microorganisms consisting of a single cell lacking a nucleus and containing DNA is a single... Read More

Hypertrophy

Hypertrophy Definition Hypertrophy refers to the enlargement or increase in the size of an organ or tissue due to the... Read More

Spermatozoon

Definition noun, plural: spermatozoa A mature male gamete or reproductive cell; sperm cell. Supplement A single sperm cell... Read More

Organelle

The cell is regarded as the structural, functional, and biological unit of all organisms. It is a membrane-bound structure... Read More

Skeletal muscle

Definition noun, plural: skeletal muscles A voluntary, striated (vertebrate) muscle that is associated with the skeleton,... Read More

Mole

Definition noun, plural: moles (chemistry) (1) The SI unit of amount of substance of a chemical system that contains as many... Read More

Invertebrate

Invertebrate Definition An invertebrate refers to any of the animals lacking a vertebral column. The term invertebrate came... Read More

Tents

tent (Science: surgery) A roll of lint or linen, or a conical or cylindrical piece of sponge or other absorbent, used... Read More

Epithelium

An epithelium is a type of animal tissue made up of densely packed cells (called epithelial cells) that rest on a basement... Read More

Tubule

Definition noun, plural: tubules A small tube-like or fistular structure; a hollow cylindrical anatomical structure in the... Read More