They need to fit in through even the smallest capillaries
Red blood cells lack a nucleus and are circular in shape. This characteristic allows them to carry oxygen more efficiently through the body.
Animal cells are circular. Plant cells are rectangular.
The shape of the chief cells of the smooth muscles is cigar shaped.
The shape of the human red blood cells is that it is biconcave in shape.
The shape of the chief cells of the frogs red blood cells is that they are biconcave in shape.
Cells in your body that can change their shape include red blood cells, white blood cells (such as neutrophils and macrophages), and muscle cells (such as muscle fibers). These cells have the ability to alter their shape to carry out their specific functions.
the red cell is responsible for carrying oxygen to the cells of the body and taking up carbon dioxide and returning it to the lungs so it can be released from the body. red blood cells a circular and biconcave in shape ,they are are elastic and so can pass through any small capillaries making the blood flow easy They turn red from oxygen reacting with the hemoglobin in them. A sickler's red blood cells are semi-circular.
white blood cells have irregular shape ,they can take any shape and easily removed
Smooth Muscle
Red blood cells have a circular biconcave shape to increase surface area to volume ratio for faster absorption of oxygen in the bloodstream.
Smooth muscle cells are long, spindle-shaped cells with a central nucleus. Plant fibers are elongated cells with thick cell walls that can be either round or polygonal in shape, depending on the plant species.
It has more to do with the rigid cell wall in a plant cell allows it to keep shape whereas animal cells can change shape freely. In theory, plant cells are like building blocks that make up the molecular system of a plant, so the inside of a plant is very organized. But, in an animal, the animal is alive and unpredictable, so the cells are very messy and sloppy. In fact, animal cells don't even always have a circular shape, they can be oval or not even make sense at all.