3 functions of muscle tissue. 1) movement a. of whole body or body parts (skeletal) b. of substances w/in body (cardiac-pumps blood, smooth-substances move through hollow organs) 2) heat production (mostly skeletal) 3) maintain posture and stabilize joints (skeletal).
Human embryonic stem cells in cell culture. Pluripotent: Embryonic stem cells are able to develop into any type of cell, excepting those of the placenta. Only embryonic stem cells of the morula are totipotent: able to develop into any type of cell, including those of the placenta. Embryonic stem cells (ES cells) are pluripotent stem cells derived from the inner cell mass of a blastocyst, an early-stage preimplantation embryo. Human embryos reach the blastocyst stage 4â5 days post fertilization, at which time they consist of 50â150 cells.
Totipotent cells are present at the very first stages of embryonic development. These cells can differentiate into any kind of cell, including extraembryonic tissues (such a â¦ s placenta). Fertilization is the creation of a single totipotent cell, the zygote. Embryonic stem cells are pluripotent, not totipotent.otipotent cells are present at the very first stages of embryonic development. These cells can differentiate into any kind of cell, including extraembryonic tissues (such a â¦ s placenta). Fertilization is the creation of a single totipotent cell, the zygote. Embryonic stem cells are pluripotent, not totipotent.