- AShoulder joint
- BBall and socket joint
- CHinge joint
- DPivot joint
Explanation:
The shoulder joint also called the gleno-humeral joint is an example of ball and socket joint. It is formed between the scapula and the humerus bones. It is the major joint that connects the upper forelimb to the trunk. It is one of the most important mobile joints in the human body.
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($i$) The cells are composed of a single layer of tall and slender cells.
($ii$) Their nuclei are located at the base.
($iii$) Free surface may have microvilli.
($iv$) It is found in the lining of stomach and intestine
($v$) They help in secretion and absorption. Based on the above features identify the epithelium.
$(i)$ The endomembrane system includes plasma membrane, ER, Golgi complex, lysosomes and vacuoles.
$(ii)$ ER helps in the transport of substances, synthesis of proteins, lipoproteins and glycogen.
$(iii)$ Ribosomes are involved in protein synthesis.
$(iv)$ Mitochondria help in oxidative phosphorylation and generation of $ATP$.
