102 results found

Search Results for: hollow

Hollow bone

Hollow bone --> pneumatic bone a bone that is hollow or contains many air cells, such as the mastoid process of the... Read More

Chordata

Chordata Definition What is Chordata? Chordata is the phylum of the animal kingdom that includes a large number of animal... Read More

Blastula

Human embryology is a fascinating subject and has succeeded in captivating the attention of human beings for ages.... Read More

Peristalsis

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

Nematocyst

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

Pith

Pith Definition In general, the term "pith" refers to the "soft inner portion" of something. In botany, a pith refers... 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

Organ

Definition Of Organ An organ is a collection of tissues that carries out a function or set of related ones. An organ often... 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

Smooth muscle

The smooth muscle can be described as a type of muscle in the human body that is non-striated and involuntary in action.... Read More

Gum

Gum The dense tissues which invest the teeth, and cover the adjacent parts of the jaws. (Science: medicine) gum rash,... Read More

Capsid

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

Microtubule

Microtubule Definition noun plural: microtubules mi·cro·tu·bule, mī'krō-tū'byūl A cytoplasmic tubule made up of... Read More

Antecubital fossa

Antecubital Fossa Definition The antecubital fossa or the cubital fossa is the triangular-shaped hollow depression between... Read More

Uterus

uterus (Science: anatomy) The hollow muscular organ in female mammals in which the fertilized ovum normally becomes embedded... Read More

Pump

pump An hydraulic machine, variously constructed, for raising or transferring fluids, consisting essentially of a moving... 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

Polyp

Definition noun, plural: polyps (1) (zoology) The hollow, columnar, sessile form of Cnidarians (as opposed to the medusa... Read More

Gallbladder

Definition noun A small, pear-shaped, muscular, hollow organ responsible for storing bile, and for creating insulin in the... Read More

Acetabulum

Acetabulum (Science: anatomy) The hollow, cuplike portion of the pelvis into which the head of the thigh bone (femur)... Read More

Chorion

Chorion Definition The chorion is a membrane that develops around the developing fertilized egg. It begins to develop... 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

Book lungs

Book Lungs Definition Lungs are known as the organs that help organisms breathe. When we think of lungs, we think of the... Read More

Bone matrix

Bone Matrix Definition Bone matrix refers to the matrix component of bone tissue. It provides the structural framework and... Read More

Vascular Plants: Ferns and Relatives

These plants are seedless plants, but unlike the bryophytes, they do have vascular tissue (xylem and phloem). Because of the... Read More

Cell Structure

The interior of human cells is divided into the nucleus and the cytoplasm. The nucleus is a spherical or oval-shaped... Read More

Respiration

Organization of the Respiratory System Each lung is composed of air sacs called alveoli - the sites of gas exchange with... Read More

Overview of Chirology

Psychodiagnostic Chirology (PDC) is a comprehensive diagnostic discipline applied by professional behavioral specialists in... Read More

Male

Male see Mal-. Evil; wicked; bad. Origin: L. Malus. See malice. same as mail, a bag. 1. Of or pertaining to the sex that... 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

Characteristic

Characteristics Definition We can define characteristics as qualities or features that describe the distinctive nature or... Read More

Feathers

Feather 1. (Science: ornithology) One of the peculiar dermal appendages, of several kinds, belonging to birds, as contour... Read More

Cavity

Cavity (Science: anatomy) a hollow place or space or a potential space, within the body or in one of its organs, it may be... Read More

Aves

Aves Definition What are birds classified as? Birds constitute the class Aves of the kingdom Animalia. How to define Aves?... Read More

Bacteria

Bacteria Definition What are bacteria? What is the definition of bacteria in biology? Bacteria are defined as organisms... Read More

Drepanocyte

Drepanocyte Synonym: sickle cell. Origin: g. Drepane, sickle, - kytos, a hollow... Read More

Alimentary canal

Definition of Alimentary canal What is the alimentary canal? The alimentary canal is a muscular hollow continuous tubular... Read More

Belly

Belly Origin: oe. Bali, bely, as. Belg, baelg, baelig, bag, bellows, belly; akin to Icel. Belgr bag, bellows, Sw. Balg, dan.... Read More

Sting

sting 1. (Science: zoology) Any sharp organ of offense and defense, especially when connected with a poison gland, and... Read More