Functions of blood

-
Blood has three main functions :  Transport, Protection and regulation.
1. Transport : blood transports the following substances:
* Gases namely oxgen (O²) and carbon dioxide (CO²), between the lungs and rest of th  body.
* Nutrients from the digestive tract and storage sites to  rest of the body.
* Waste products to detoxified or removed by the liver and kidneys.
 Hormones from the glands in which they are produced to their target cells.
* Heat to the skin to regulate body temperature.
2. Protection : blood has several roles in inflammation:
* Leukocytes or white blood cells, destroy invading  microorganisms and canncer cells.
*  Antibodies and other proteine destroy pathogenic substances.
* Platelet factors initiate blood clotting and help to minimise blood loss.
3.  Regulation : blood helps to regulate:
* pH by interacting with acids and bases.
* Water balance by transferring  water to and from tissues.

Comments

Post a Comment

Popular posts from this blog

Tissues including membranes and glands: types

-
Image
Definition A tissue is a group of cells the Usally have a common original in an embryo and function  together to carry out specialized activities. Types of tissues The tissues of the consist of large numbers of cells and they are  classified according to the size, shape and functions of these cells. There are four main types of tissue that each have subdivisions . They are: ¹. Epithelial tissue ². Connective tissue ³. Muscular tissue 4. Nervous tissue 1. Epithelial Tissue It covers body surface and lines hollow organs. Body cavities and ducts. It is allows the body interact with internal and y environment. Epithelial tissue consists of cells arranged in continuous sheets in single or multiple layers. Structure of Epithelial Tissue: Apical surface of an Epithelial cell faces the body surface, body cavity, lumen  of an internal organ recieves cell  secretion. The lateral surfaces of an Epithelial cell facing the adjacent cells on either side may contain tight junctions, d
Read more

Body cavities (शारीरिक गड्डे)

-
BODY CAVITIES A body cavities is fluid-filled space in multicellular organism other than those of vessels ( such as blood vessels and lymph vessels) .the term usually refers to the space located between an outer covering (epidermis),and the outer lining of the gut cavity internal organs develop. The cavities include: 1. Dorsal body cavity: a.   Cranial cavity:  Enclosed by the skull and contains the brain. b. Spinal canal: Enclosed by the spine and contains the spinal cord. 2. Ventral body cavity:  a. Thoracic cavity: Enclosed by the ribcage and contains the lungs and heat. b. Abdominopelvic cavity: 1. Abdominal cavity: Enclosed by the ribcage and pelvis and contains the kidneys, ureters, stomach, intestines, liver, gallbladder, and pancreas. 2. Pelvis cavity: Enclosed by the pelvis and contains bladder ,anus and reproductive system. Translate: Hindi शारीरिक गड्डे  एक शरीर की गुहाएं वाहिकाओं (जैसे रक्त वाहिकाओं और लिम्फ वाहिकाओं) के अलावा बहुकोशिकीय जीव में द्रव से भरा स्थान है। यह शब्
Read more

System and cavities of the human body

-
Human body organ systems The human body is made up eleven organ systems that work with one another ( interdependantly ). These systems integumentary system, skeletal system, muscular system lymphatic system, respiratory system, digestive system, nervous system,endocrine system, cardiovascular system, urinary system and reproductive system, we will briefly discuss the major functions of each Organ system below. 1. Integumentary system :  ( Skin, hair, nails ) Forms the external body covering and protects  deeper tissue from injury. Houses cutaneous receptors, sweat glands, oil glands and synthesizes vitamin D. 2. Skeletal system : ( Bones, joints) supports and protects the Organ of the baby. Provides a framework to muscles ( movement ) .bones also store minerals and create blood cells. 3. Muscular system : ( Skeletal muscles ) Maintains posture and produces movement (locomotion ) produces heat. 4. Lymphatic system : (  red bone marrow,thymus, lymphatic vessels thoracic duct, spleen, lym
Read more