Erythrocytes: Red Blood Cells
Task 1a:
Erythrocytes: These are also known as red blood cells and contain haemoglobin with their primary function being to carry oxygen from the lungs then disperse it into the tissues throughout the body through a series of capillaries. The distinctive red colour of the erythrocytes or red blood cells is due to their contents of haemoglobin. In order to facilitate its purpose the erythrocytes can be described as biconcave in shape therefore enabling them to diffuse oxygen around the body with ease, additionally there flexibility enables them to adapt to their surroundings as they move throughout the capillaries within the body. http://www.medicinenet.com/script/main/art.asp?articlekey=3309 http://www.ncbi.nlm.nih.gov/pubmedhealth/PMHT0022014/ …show more content…
Arterioles consist of muscular walls and are the primary site of vascular resistance which is the resistance that must be overcome in order to push blood through the circulatory system and create a steady flow. The greatest change in blood pressure and velocity of the blood flow occurs at the transition of arterioles and capillaries; therefore a decrease in the velocity of blood flow within the capillaries increases the blood pressure. Arterioles respond to various circulating hormones within the body in order to regulate their diameter, they respond primarily to stretch, carbon dioxide, pH, and oxygen, which also influence their tone. With stretch and high oxygen tension increasing its tone, and carbon dioxide and low pH promoting a dilation of blood vessels consequently increasing blood …show more content…
The three types of muscle tissue include: skeletal muscle, smooth muscle and cardiac muscle. The smooth and cardiac muscle contract involuntary unlike the skeletal muscle which requires constant intervention. There structures include:
• Skeletal Muscle – This particular muscle is striated in structure and under voluntary control. The skeletal muscle is anchored by tendons to the bone and influences skeletal movement such as posture.
• Smooth Muscle – The smooth muscle differs as it is not striated in structure nor under voluntary control and is found within the walls of the stomach, bladder, blood vessels, uterus and intestines.
• Cardiac Muscles – These are found only within the heart and are a striated muscle similar I structure to the skeletal muscle but instead subject to involuntary control. Additionally unlike other tissues in the body the cardiac muscle cells rely in a plentiful blood and electrical supply in order to deliver oxygen and nutrients and also remove any waste products such as carbon
Erythrocytes: These are also known as red blood cells and contain haemoglobin with their primary function being to carry oxygen from the lungs then disperse it into the tissues throughout the body through a series of capillaries. The distinctive red colour of the erythrocytes or red blood cells is due to their contents of haemoglobin. In order to facilitate its purpose the erythrocytes can be described as biconcave in shape therefore enabling them to diffuse oxygen around the body with ease, additionally there flexibility enables them to adapt to their surroundings as they move throughout the capillaries within the body. http://www.medicinenet.com/script/main/art.asp?articlekey=3309 http://www.ncbi.nlm.nih.gov/pubmedhealth/PMHT0022014/ …show more content…
Arterioles consist of muscular walls and are the primary site of vascular resistance which is the resistance that must be overcome in order to push blood through the circulatory system and create a steady flow. The greatest change in blood pressure and velocity of the blood flow occurs at the transition of arterioles and capillaries; therefore a decrease in the velocity of blood flow within the capillaries increases the blood pressure. Arterioles respond to various circulating hormones within the body in order to regulate their diameter, they respond primarily to stretch, carbon dioxide, pH, and oxygen, which also influence their tone. With stretch and high oxygen tension increasing its tone, and carbon dioxide and low pH promoting a dilation of blood vessels consequently increasing blood …show more content…
The three types of muscle tissue include: skeletal muscle, smooth muscle and cardiac muscle. The smooth and cardiac muscle contract involuntary unlike the skeletal muscle which requires constant intervention. There structures include:
• Skeletal Muscle – This particular muscle is striated in structure and under voluntary control. The skeletal muscle is anchored by tendons to the bone and influences skeletal movement such as posture.
• Smooth Muscle – The smooth muscle differs as it is not striated in structure nor under voluntary control and is found within the walls of the stomach, bladder, blood vessels, uterus and intestines.
• Cardiac Muscles – These are found only within the heart and are a striated muscle similar I structure to the skeletal muscle but instead subject to involuntary control. Additionally unlike other tissues in the body the cardiac muscle cells rely in a plentiful blood and electrical supply in order to deliver oxygen and nutrients and also remove any waste products such as carbon