Which of the following helps in the repair of tissue and fills up the space inside the organ?

$(a)$ Why is connective tissue called so?
$(b)$ What is the function of the areolar connective tissue?
$(c)$ Which substance is present in the adipocyte? How does it help?

State one important function of each of the following:
$(a)$ Areolar tissue
$(b)$ Cuboidal epithelium

$A$ person met with an accident in which two long bones of the hand were dislocated. Which among the following may be the possible reason?

Name the muscular tissue which is present in the iris of the eye. What is the shape of these cells?

$A$ person met with an accident in which two long bones of the hand were dislocated. Which among the following may be the possible reason?